Earnings Per Common Share (Details 2) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reconciliation of the basic and diluted EPS denominators
Common stock	32,084	31,980	32,114	32,189
Dilutive effect of common stock options		9	1	11
Dilutive effect of non-participating restricted common stock	580	409	438	223
Dilutive effect of 2010 Convertible Notes
Diluted weighted-average common shares	32,664	32,398	32,553	32,423

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

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