Condensed Consolidated Statement of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities
Net income (loss)	$ (2,148,873)	$ 1,138,720
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	4,595,735	4,090,938
Stock-based compensation expense	1,240,523	2,060,738
Deferred income taxes	(68,431)	(7,188)
Bad debt provision	656,237	874,501
Change in fair value of contingent consideration	1,910,922	313,233
Other operating activities	52,427	52,427
Change in assets:
Accounts receivable and unbilled revenue	(16,255,677)	(3,951,614)
Inventories	(1,388,002)	(6,488,950)
Prepaid expenses and other assets	16,381,567	3,099,672
Change in liabilities:
Accounts payable	(40,196,285)	(3,849,922)
Accrued expenses and other liabilities	10,652,625	(3,608,151)
Net cash used in operating activities	(24,567,232)	(6,275,596)
Cash flows from investing activities
Purchases of property and equipment	(3,987,162)	(3,718,679)
Net cash used in investing activities	(3,987,162)	(3,718,679)
Cash flows from financing activities
Net borrowings from revolving credit facility	19,357,516	5,579,750
Net short-term secured borrowings (repayments)	(1,802,548)	88,837
Repurchases of common stock	0
Stock Repurchased During Period, Value		(3,499,998)
Payments of contingent consideration	(525,000)	(437,500)
Proceeds from exercise of stock options	984,000	38,554
Other financing activities	381,502	(98,773)
Net cash provided by financing activities	18,395,470	1,670,870
Effect of exchange rate changes on cash and cash equivalents	332,955	(848,497)
Decrease in cash and cash equivalents	(9,825,969)	(9,171,902)
Cash and cash equivalents, beginning of period	30,754,930
Cash and cash equivalents, end of period	$ 20,928,961	$ 13,406,040