Note 3 - Supplemental Balance Sheet Information (Details) - The composition of selected balance sheet accounts is as follows: (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Contract receivables, net:
Retainages and fee withholdings	$ 600
Other unbilled receivables			1,500
Total unbilled receivables			600
Contract receivables, net	46,723		48,112
Prepaid expenses and other current assets:
Prepaid expenses and other current assets	3,173		2,538
Property and equipment, net	12,402		12,511
Other noncurrent assets:
Other	4,113		4,388
Other noncurrent assets	202,147		209,399
Accrued compensation and employee benefits:
Accrued compensation and related taxes	15,931		14,933
Other accrued expenses:
Other	3,936		5,307
Other long-term liabilities:
Other long-term liabilities	33,094		34,941
Accounts Receivable [Member]
Contract receivables, net:
Billed receivables	17,315		14,785
Revenues recorded in excess of milestone billings on fixed-price contracts with state and local government agencies	6,452	[1]	6,828	[1]
Retainages and fee withholdings	612	[1]	587	[1]
Other unbilled receivables	23,254	[1]	27,114	[1]
Total unbilled receivables	30,318		34,529
Allowance for doubtful accounts	(910)		(1,202)
Contract receivables, net	46,723		48,112
Other NonCurrent Assets [Member]
Other noncurrent assets:
Deferred compensation plan investments	1,676		1,459
Equity investment	782		910
Other	1,655		2,019
Other noncurrent assets	4,113		4,388
Accrued Compensation And Employee Benefits [Member]
Accrued compensation and employee benefits:
Accrued compensation and related taxes	5,361		5,881
Accrued vacation	5,366		4,799
Accrued pension liability	2,302		2,800
Other	2,902		1,453
Accrued compensation and employee benefits	15,931		14,933
Other Accrued Expenses [Member]
Other accrued expenses:
Deferred rent liability	1,521		1,265
Deferred gain on sale of building	676		676
Accrued interest	65		114
Other	1,674		3,252
Other accrued expenses	3,936		5,307
Other Long-Term Liabilities [Member]
Other long-term liabilities:
Accrued pension liability	24,232		26,057
Deferred rent liability	5,771		5,389
Deferred compensation plan liability	1,676		1,459
Deferred gain on sale of building	845		1,352
Other	570		684
Other long-term liabilities	33,094		34,941
Prepaid Expenses and Other Current Assets [Member] | Property, Plant and Equipment [Member]
Prepaid expenses and other current assets:
Leasehold improvements	12,993		11,218
Software	10,263		10,224
Furniture and other equipment	10,127		9,841
Property and equipment	33,383		31,283
Less accumulated depreciation	(20,981)		(18,772)
Property and equipment, net	12,402		12,511
Prepaid Expenses and Other Current Assets [Member]
Prepaid expenses and other current assets:
Refundable income taxes	2,133		1,507
Restricted cash			255
Other	1,040		776
Prepaid expenses and other current assets	$ 3,173		$ 2,538

[1] At September 30, 2013 and December 31, 2012, unbilled retainages and fee withholdings of $0.6 million were not anticipated to be billed within one year. Additionally, at December 31, 2012, $1.5 million of the other unbilled receivable balances were not scheduled to be invoiced within one year.