Debt (Tables)

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

Summary of Indebtedness outstanding

Indebtedness outstanding was as follows:

($ in thousands)	September 30, 2017		December 31, 2016
Short-term debt:
Bank Credit Facility, expires July 30, 2019	$	—	$	—
Long-term debt:
4.50% Senior Notes, due December 1, 2025. Aggregate principal amount of $250,000 thousand less unaccrued discount of $561 thousand and $603 thousand (4.5% imputed rate) and unamortized debt issuance costs of $2,036 thousand and $2,188 thousand	247,403		247,209