Condensed Consolidated Statement of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities
Net income (loss)	$ 5,456,000	$ (2,693,000)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	2,904,474	4,595,735
Stock-based compensation expense	1,418,814	1,240,523
Deferred income taxes	(16,105)	(389,286)
Bad debt provision	175,422	656,237
Change in fair value of contingent consideration	(1,039,693)	1,910,922
Other operating activities	52,427	52,427
Change in assets:
Accounts receivable and unbilled revenue	(7,317,819)	(16,255,677)
Inventories	1,299,728	(1,388,002)
Prepaid expenses and other assets	(978,564)	16,381,567
Change in liabilities:
Accounts payable	(6,889,997)	(40,196,285)
Accrued expenses and other liabilities	5,056,964	11,517,465
Net cash provided by (used in) operating activities	121,419	(24,567,230)
Cash flows from investing activities
Purchases of property and equipment	(3,042,073)	(3,987,162)
Net cash used in investing activities	(3,042,073)	(3,987,162)
Cash flows from financing activities
Net borrowings from revolving credit facilities	6,519,048	19,357,516
Net short-term secured borrowings	(800,696)	(1,802,548)
Repurchases of common stock	(4,342,419)
Stock Repurchased During Period, Value	5,490,956	0
Payments of contingent consideration	0	(525,000)
Proceeds from exercise of stock options	188,544	984,000
Other financing activities	(94,952)	381,502
Net cash provided by financing activities	1,469,525	18,395,470
Effect of exchange rate changes on cash and cash equivalents	447,443	332,952
Decrease in cash and cash equivalents	(1,003,686)	(9,825,970)
Cash and cash equivalents, beginning of period	30,924,000	30,754,930
Cash and cash equivalents, end of period	$ 29,920,200	$ 20,928,960