Accounts Receivable (Details) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Accounts Receivable [Abstract]
Accounts receivable-net	$ 26,323,000	$ 30,680,000
Allowances for doubtful accounts	685,000	917,000
Government segment [Member]
Accounts Receivable [Abstract]
Accounts receivable-net	6,880,000	11,351,000
Government segment [Member] | Billed [Member]
Accounts Receivable [Abstract]
Accounts receivable-net	8,373,000	12,903,000
Government segment [Member] | Advance billings [Member]
Accounts Receivable [Abstract]
Accounts receivable-net	(1,493,000)	(1,552,000)
Hospitality segment [Member]
Accounts Receivable [Abstract]
Accounts receivable-net	$ 19,443,000	$ 19,329,000