Condensed Consolidated Balance Sheet - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 23,537,000	$ 30,924,000
Accounts receivable, net of allowance for doubtful accounts of $2,466 and $2,622, respectively	208,382,000	182,874,000
Unbilled revenue	36,515,000	32,723,000
Inventories	28,192,000	31,638,000
Prepaid expenses	23,588,000	18,772,000
Other current assets	20,949,000	24,769,000
Total current assets	341,163,000	321,700,000
Property and equipment, net	36,030,000	32,656,000
Intangibles and other assets:
Goodwill	205,399,000	202,700,000
Intangible assets, net	29,699,000	31,537,740
Deferred income taxes	1,281,000	1,031,000
Other non-current assets	1,267,000	1,374,000
Total intangibles and other assets	237,646,000	236,643,000
Total assets	614,839,000	590,999,000
Current liabilities:
Accounts payable	125,593,000	121,289,000
Current portion of contingent consideration		19,283,000
Due to seller	17,842,000	0
Accrued expenses	27,567,000	30,067,000
Other current liabilities	37,748,000	35,049,000
Total current liabilities	208,750,000	205,688,000
Revolving credit facility	118,658,000	107,468,000
Deferred income taxes	9,852,000	11,291,000
Other non-current liabilities	1,988,000	1,926,000
Total liabilities	339,248,000	326,373,000
Commitments and contingencies (See Note 11)
Stockholders' equity:
Common stock, par value $0.0001 per share, 200,000 and 200,000 shares authorized, 63,808 and 63,391 shares issued, and 53,500 and 54,088 shares outstanding, respectively	6,000	6,000
Additional paid-in capital	230,030,000	224,480,000
Treasury stock at cost, 10,308 and 9,303 shares, respectively	(59,224,000)	(49,458,000)
Accumulated other comprehensive loss	(14,940,000)	(20,799,000)
Retained earnings	119,719,000	110,397,000
Total stockholders' equity	275,591,000	264,626,000
Total liabilities and stockholders' equity	614,839,000	$ 590,999,000
Series of Individually Immaterial Business Acquisitions [Member] | Common Stock [Member] | Estimate of Fair Value Measurement [Member]
Current liabilities:
Current portion of contingent consideration	$ 0