Debt (Tables)

12 Months Ended

Dec. 31, 2012

Debt [Abstract]

Long-term debt

Long-term debt was comprised of the following at December 31:

($ in thousands)	2012		2011
Revolving credit facility, weighted-average interest rate of 1.8% (2012) and 1.9% (2011), due in 2017 and 2015, respectively	$	153,500	$	74,400
Less current maturities		—		—
Total long-term debt	$	153,500	$	74,400