Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Cash Flows [Abstract]
Net loss	$ (3,127)	$ (3,884)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	1,180	958
Depreciation and amortization expense	6,531	3,082
Non-cash interest expense	1,911	1,608
Loss on disposal of assets	151	0
Deferred taxes	(626)	0
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable	(12,817)	703
Unbilled receivables	(33,858)	(1,249)
Inventories, net	17	(1,581)
Prepaid expenses	371	(345)
Accounts payable	1,914	(738)
Accrued expenses	(2,894)	(923)
Other non-current assets/liabilities	(344)	(60)
Net cash used in operating activities	(15,957)	(3,835)
Cash flows from investing activities:
Purchases of property and equipment	(1,119)	(2,959)
Net cash used in investing activities	(1,119)	(2,959)
Cash flows from financing activities:
Proceeds from stock issuance, net	0	84,586
Principal payments of term note	(1,688)	0
Proceeds from revolver	9,000	0
Proceeds from option and warrant exercises, net	32	28
Net cash provided by financing activities	2,344	84,614
Net (decrease) increase in cash and cash equivalents	(14,732)	77,820
Cash and cash equivalents at beginning of period	17,832	41,871
Cash and cash equivalents at end of period	3,100	119,691
Supplemental disclosure of cash flow information:
Cash paid for interest	3,786	1,897
Cash paid for taxes	1	6
Repayments of Lines of Credit	$ 5,000	$ 0