Accounts Receivable (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accounts Receivable [Abstract]
Accounts receivable-net	$ 31,336	$ 30,680
Allowances for doubtful accounts	753,000	917,000
Government segment [Member]
Accounts Receivable [Abstract]
Accounts receivable-net	11,745	11,351
Government segment [Member] \| Billed [Member]
Accounts Receivable [Abstract]
Accounts receivable-net	13,854	12,903
Government segment [Member] \| Advance billings [Member]
Accounts Receivable [Abstract]
Accounts receivable-net	(2,109)	(1,552)
Hospitality segment [Member]
Accounts Receivable [Abstract]
Accounts receivable-net	$ 19,591	$ 19,329

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3-4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph a(1)

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

Name:	us-gaap_AccountsReceivableNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant