CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income	$ 1,197	$ 4,087
Adjustments to reconcile net income to net cash from operating activities:
Depreciation	734	354
Amortization of intangible assets	810	233
Amortization of inventory fair value step - up	734	0
Amortization of deferred financing costs	49	0
Share-based compensation	4,615	3,933
Increase (decrease) in cash, net of effects of acquisition, resulting from changes in:
Accounts receivable	1,874	(4,329)
Inventory	(264)	885
Prepaid expenses and other current assets	(2,066)	(801)
Other assets	209	(26)
Accounts payable	(4,265)	1,789
Accrued compensation	(5,640)	(2,803)
Accrued expenses	493	1,111
Other liabilities	543	(223)
Net cash flows from operating activities	(977)	4,210
Cash flows from investing activities:
Purchases of equipment	(2,008)	(1,347)
Purchase of Stability Inc., net of cash acquired	(7,631)	0
Fixed maturity securities redemption	500	500
Patent application costs	(147)	(201)
Net cash flows from investing activities	(9,286)	(1,048)
Cash flows from financing activities:
Proceeds from exercise of stock options	1,138	1,276
Stock repurchase under repurchase plan	(3,530)	(12,295)
Stock repurchase for tax withholdings on vesting of restricted stock	(684)	0
Deferred financing costs	(20)	0
Payments under capital lease obligations	(10)	(29)
Net cash flows from financing activities	(3,106)	(11,048)
Net change in cash	(13,369)	(7,886)
Cash and cash equivalents, beginning of period	28,486	46,582
Cash and cash equivalents, end of period	$ 15,117	$ 38,696