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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2016 | Sep. 30, 2015
Cash flows from operating activities: |  |
Net income | $ 6,493 | $ 16,068
Adjustments to reconcile net income to net cash from operating activities: |  |
Depreciation | 2,394 | 1,247
Amortization of intangible assets | 1,889 | 699
Amortization of inventory fair value step-up | 1,471 | 0
Amortization of deferred financing costs | 136 | 0
Share-based compensation | 13,826 | 12,564
Increase (decrease) in cash, net of effects of acquisition, resulting from changes in: |  |
Accounts receivable | (7,671) | (20,106)
Inventory | (3,599) | (520)
Prepaid expenses and other current assets | (2,023) | (1,201)
Other assets | (163) | (26)
Accounts payable | (3,941) | 3,747
Accrued compensation | (4,223) | 1,474
Accrued expenses | 2,020 | 1,592
Other liabilities | 2,539 | (1,087)
Net cash flows from operating activities | 9,148 | 14,451
Cash flows from investing activities: |  |
Purchases of equipment | (5,301) | (4,176)
Purchase of Stability Inc., net of cash acquired | (7,631) | 0
Fixed maturity securities redemption | 3,000 | 2,500
Patent application costs | (515) | (594)
Net cash flows from investing activities | (10,447) | (2,270)
Cash flows from financing activities: |  |
Proceeds from exercise of stock options | 2,548 | 3,465
Stock repurchase under repurchase plan | (10,378) | (21,068)
Stock repurchase for tax withholdings on vesting of restricted stock | (892) | 0
Deferred financing costs | (106) | 0
Payments under capital lease obligations | (21) | (87)
Net cash flows from financing activities | (8,849) | (17,690)
Net change in cash | (10,148) | (5,509)
Cash and cash equivalents, beginning of period | 28,486 | 46,582
Cash and cash equivalents, end of period | $ 18,338 | $ 41,073

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
Name: | us-gaap_ShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration