Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating activities
Net loss	$ (13,664,000)	$ (20,117,000)	$ (9,197,000)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	8,451,000	7,457,000	5,595,000
Deferred income taxes	207,000	(295,000)	(104,000)
Foreign currency re-measurement loss	981,000	0	0
Non-cash interest and other expense	376,000	589,000	1,585,000
Non-cash stock compensation expense	2,741,000	1,077,000	498,000
Stock-based compensation—related party vendor	0	11,220,000	0
Changes in operating assets and liabilities, net of purchase business combinations:
Accounts receivable	741,000	(1,579,000)	2,941,000
Prepaids and other	1,873,000	484,000	(1,617,000)
Accounts payable	157,000	639,000	(1,113,000)
Accrued expenses and other liabilities	(2,796,000)	(924,000)	2,176,000
Deferred revenue	(570,000)	2,626,000	(1,003,000)
Net cash provided by (used in) operating activities	(1,503,000)	1,177,000	(239,000)
Investing activities
Purchase of property and equipment	(956,000)	(861,000)	(263,000)
Purchase of customer relationships	791,000	0	0
Purchase business combinations, net of cash acquired	(7,664,000)	(6,217,000)	(28,175,000)
Cash included in distribution of spin-off	0	0	(127,000)
Net cash provided by (used in) investing activities	(9,411,000)	(7,078,000)	(28,565,000)
Financing activities
Payments on capital leases	(1,020,000)	(541,000)	(351,000)
Proceeds from notes payable, net of issuance costs	24,083,000	5,685,000	28,036,000
Payments on notes payable	(23,907,000)	(10,910,000)	(17,516,000)
Series C redeemable preferred stock issuance costs	0	(97,000)	19,716,000
Issuance of common stock, net of issuance costs	(18,000)	38,846,000	0
Additional consideration paid to sellers of businesses	(359,000)	(599,000)	(321,000)
Net cash provided by (used in) financing activities	(1,221,000)	32,384,000	29,564,000
Effect of exchange rate fluctuations on cash	(380,000)	(198,000)	51,000
Change in cash and cash equivalents	(12,515,000)	26,285,000	811,000
Cash and cash equivalents, beginning of period	30,988,000	4,703,000	3,892,000
Cash and cash equivalents, end of period	18,473,000	30,988,000	4,703,000
Supplemental disclosures of cash flow information
Cash paid for interest	1,523,000	1,382,000	1,221,000
Cash paid for taxes	314,000	252,000	287,000
Noncash investing and financing activities
Notes payable issued to sellers in business combination	0	0	3,500,000
Equipment acquired pursuant to capital lease obligations	$ 3,428,000	$ 1,572,000	$ 649,000