Long-Term Debt and Borrowing Agreements	9 Months Ended
Sep. 30, 2012
Long-Term Debt and Borrowing Agreements [Abstract]
LONG-TERM DEBT AND BORROWING AGREEMENTS	9. LONG-TERM DEBT AND BORROWING AGREEMENTS On September 30, 2010, the Company entered into a Credit Agreement with a consortium of financial institutions that provides for a revolving credit facility with an aggregate commitment of $125.0 million and a $50 million accordion option through September 30, 2015. The Credit Agreement includes a $5.0 million swing line facility and a $20.0 million sub-facility for the issuance of LOCs. As of September 30, 2012 and December 31, 2011, there were no borrowings outstanding under the Credit Agreement and outstanding LOCs were $5.9 million and $8.4 million, respectively. Subsequent to September 30, 2012, the Company reduced its revolving credit facility capacity to $50.0 million. Under the Credit Agreement, the Company pays bank commitment fees on the unused portion of the commitment, ranging from 0.20% to 0.35% per year based on the Company’s leverage ratio. There were no borrowings during both the nine months ended September 30, 2012 and 2011 under the Company’s Credit Agreement. The Credit Agreement provides pricing options for the Company to borrow at the bank’s prime interest rate or at LIBOR plus an applicable margin determined by the Company’s leverage ratio based on a measure of indebtedness to earnings before interest, taxes, depreciation and amortization (“EBITDA”). The Credit Agreement also contains usual and customary negative covenants for a credit facility and requires the Company to meet minimum leverage and interest and rent coverage ratio covenants. The Credit Agreement also contains usual and customary provisions regarding acceleration. In the event of certain defaults by the Company under the Credit Agreement, the lenders will have no further obligation to extend credit and, in some cases, any amounts owed by the Company under the Credit Agreement will automatically become immediately due and payable.

Long-Term Debt and Borrowing Agreements

9 Months Ended

Sep. 30, 2012

Long-Term Debt and Borrowing Agreements [Abstract]

9. LONG-TERM DEBT AND BORROWING AGREEMENTS

On September 30, 2010, the Company entered into a Credit Agreement with a consortium of financial institutions that provides for a revolving credit facility with an aggregate commitment of $125.0 million and a $50 million accordion option through September 30, 2015. The Credit Agreement includes a $5.0 million swing line facility and a $20.0 million sub-facility for the issuance of LOCs. As of September 30, 2012 and December 31, 2011, there were no borrowings outstanding under the Credit Agreement and outstanding LOCs were $5.9 million and $8.4 million, respectively. Subsequent to September 30, 2012, the Company reduced its revolving credit facility capacity to $50.0 million.

Under the Credit Agreement, the Company pays bank commitment fees on the unused portion of the commitment, ranging from 0.20% to 0.35% per year based on the Company’s leverage ratio. There were no borrowings during both the nine months ended September 30, 2012 and 2011 under the Company’s Credit Agreement.

The Credit Agreement provides pricing options for the Company to borrow at the bank’s prime interest rate or at LIBOR plus an applicable margin determined by the Company’s leverage ratio based on a measure of indebtedness to earnings before interest, taxes, depreciation and amortization (“EBITDA”). The Credit Agreement also contains usual and customary negative covenants for a credit facility and requires the Company to meet minimum leverage and interest and rent coverage ratio covenants. The Credit Agreement also contains usual and customary provisions regarding acceleration. In the event of certain defaults by the Company under the Credit Agreement, the lenders will have no further obligation to extend credit and, in some cases, any amounts owed by the Company under the Credit Agreement will automatically become immediately due and payable.