Note J - Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Foreign Tax Authority [Member]
Deferred Tax Assets
Foreign tax credits	$ 1,914	$ 2,060
Less: Valuation Allowance	(900)	(500)
State and Local Jurisdiction [Member]
Deferred Tax Assets
Foreign tax credits	1,339	1,016
United States Government [Member]
Deferred Tax Assets
Foreign tax credits	225	225
Stock option compensation	458	319
Allowance for bad debt	831	789
Accrued paid time off	2,416	1,975
Accrued bonus	$ 149	608
Foreign tax credits		322
Accrued liabilities		1,890
Total current deferred tax asset	$ 3,854	5,903
Foreign net operating loss (NOL) carry forward	933	542
Federal/state net operating loss (NOL) carry forward	6,458	3,447
Stock option compensation	4,334	3,757
Deferred rent	5,376	5,086
Deferred compensation	2,908	2,823
Foreign exchange	1,879	447
Accrued liabilities and other	2,643	1,375
Total non-current deferred tax assets	28,009	20,778
Less: Valuation Allowance	(933)	(542)
Total Deferred Tax Assets	30,930	26,139
Deferred Tax Liabilities
Retention	(1,860)	(1,899)
Prepaids	(1,040)	(1,549)
Payroll taxes	(502)	(1,064)
Unbilled revenue	(8,093)	(8,483)
Other	(363)	(219)
Total current deferred liability	(11,858)	(13,214)
Depreciation	(7,186)	(8,766)
Amortization	(44,867)	(39,318)
Other	(345)	(39)
Total non-current deferred tax liabilities	(52,398)	(48,123)
Total Deferred Tax Liabilities	(64,256)	(61,337)
Total Net Deferred Tax Liability	$ (33,326)	$ (35,198)