CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net (loss) income	$ (2,881)	$ 209
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	1,765	1,004
Amortization of deferred financing costs and debt discount	22	580
Payment of imputed interest on debt		(316)
Deferred taxes	95	22
Stock-based compensation	3,821	127
Change in fair value of warrant liability		(134)
Change in fair value of acquisition-related contingent consideration	21	54
Changes in operating assets and liabilities, net of effect from acquisitions:
Accounts receivable, net	(1,943)	175
Inventories	(110)	15
Rebates receivable	(3)	17
Prepaid expenses and other current assets	(207)	(162)
Other assets	(1)	(34)
Accounts payable		355
Accrued expenses and other liabilities	1,296	905
Other long-term liabilities	102	1,718
Net cash provided by operating activities	1,977	4,535
Cash flows from investing activities:
Purchases of property and equipment	(865)	(2,412)
Software development costs	(800)	(248)
Change in restricted cash		200
Net cash used in investing activities	(1,665)	(2,460)
Cash flows from financing activities:
Proceeds from exercise of stock options	50
Payments for employee taxes for shares withheld	(88)
Payments for debt financing costs	(18)
Borrowings on line of credit		2,000
Payments of acquisition-related consideration		(180)
Payments of initial public offering costs	(132)	(401)
Payments of contingent consideration	(1,498)	(1,895)
Repayments of long-term debt	(166)	(1,338)
Net cash used in financing activities	(1,852)	(1,814)
Net (decrease) increase in cash	(1,540)	261
Cash, beginning of period	4,345	2,026
Cash, end of period	2,805	2,287
Supplemental disclosure of cash flow information
Acquisition of equipment under capital leases	50	318
Additions to property, equipment, and software development purchases included in accounts payable	330	82
Deferred offering costs included in accounts payable		1,587
Cash paid for interest	51	771
Decretion of redeemable convertible preferred stock to redemption value		$ (403)
Employee payroll taxes on net exercise of stock options included in accrued expenses	$ 1,970