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Credit Arrangements (Notes)
3 Months Ended
Mar. 31, 2015
Debt Disclosure [Abstract]  
Credit Arrangements
Credit Arrangements

In July 2014, the company entered into a one year, $75.0 million, single-bank revolving credit facility. The company drew $15.0 million on the credit facility during the first quarter of 2015 and had an outstanding principal balance of $45.0 million at an interest rate of LIBOR plus 100 basis points as of March 31, 2015, leaving borrowing availability of $30.0 million.