In millions, except per share items | Jun-30-14 | Mar-31-14 | Dec-31-13 | Sep-30-13 | Jun-30-13 | Mar-31-13 | Dec-31-12 | Sep-30-12 |
| 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
Cash flows from operating activities: | | | | | | | | |
Net income | 1.9 | 2.2 | 1.0 | 6.3 | 4.3 | 2.6 | -32.6 | -6.3 |
Adjustments to reconcile net income to net cash flows from operating activities, net of assets acquired and liabilities assumed: | | | | | | | | |
Depreciation and amortization | 1.0 | 0.5 | | | 1.1 | 0.6 | | |
Share-based compensation expense | 0.9 | 0.5 | 0.8 | 1.6 | 1.1 | 0.6 | | 1.0 |
Write-downs of inventories | 0.2 | 0.0 | 0.2 | 0.5 | 0.2 | 0.1 | | 0.5 |
Other non-cash items | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | 0.0 |
Changes in operating assets and liabilities: | | | | | | | | |
Accounts receivable | -0.2 | -0.9 | -0.8 | -1.4 | -1.6 | -2.4 | | 1.4 |
Inventories | -1.9 | 0.4 | -0.4 | 0.0 | -0.2 | 0.8 | -4.0 | -1.2 |
Other current assets | -0.1 | -0.1 | -0.2 | -0.7 | -1.0 | -0.2 | | 0.6 |
Other assets | -0.2 | 0.1 | -0.5 | 0.2 | 0.2 | 0.0 | | 0.1 |
Accounts payable | 3.9 | -0.1 | 0.8 | -5.0 | -4.8 | -3.4 | | 3.5 |
Accrued compensation and benefits | -0.8 | -1.6 | 0.0 | -0.7 | -1.6 | -2.1 | | 0.6 |
Other accrued expenses | 1.8 | 0.1 | 0.5 | 0.5 | 0.4 | -0.5 | -0.6 | 1.7 |
Net cash provided by (used) in operating activities | 6.5 | 1.0 | 1.6 | 2.7 | -1.8 | -3.8 | -12.4 | 2.3 |
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Cash flows from investing activities: | | | | | | | | |
Purchases of marketable securities | -2.5 | -3.0 | -6.2 | -2.4 | -4.3 | -1.4 | -1.5 | |
Maturities of marketable securities | 4.9 | 2.4 | 2.4 | 4.7 | 3.1 | 1.1 | | 2.0 |
Purchase of property and equipment | -1.8 | -0.3 | -0.4 | -0.6 | -0.4 | -0.1 | -2.6 | -0.3 |
Net cash used in investing activities | -2.5 | -0.9 | -2.3 | -4.2 | -3.0 | -0.4 | | 10.7 |
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Cash flows from financing activities: | | | | | | | | |
Proceeds from exercise of common stock options | 0.6 | 0.4 | 0.3 | 1.6 | 1.4 | 1.1 | | 0.3 |
Taxes paid related to net share settlement of equity awards | | | | -0.3 | -0.3 | -0.3 | -0.1 | 0.0 |
Net cash provided by financing activities | 0.6 | 0.4 | -0.7 | -0.8 | 1.1 | 0.8 | | -3.3 |
Effect of exchange rate fluctuations on cash and cash equivalents | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.1 | 0.0 |
Net increase (decrease) in cash and cash equivalents | 4.6 | 0.5 | -1.4 | -2.2 | -3.8 | -3.4 | | 9.6 |
Cash and cash equivalents at beginning of period | 11.0 | 11.0 | | 14.7 | 14.7 | 14.7 | | |
Cash and cash equivalents at end of period | 15.7 | 11.6 | -1.4 | 12.4 | 10.9 | 11.3 | | 9.6 |
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Supplemental disclosure of cash flow information: | | | | | | | | |
Cash paid for income taxes | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | | | 0.0 |
Cash from income tax refunds | | | 0.0 | 0.0 | 0.0 | | | |
Cash paid for interest | 0.1 | 0.0 | 0.1 | 0.2 | 0.1 | 0.1 | | 0.1 |