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