Debt (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Summary of Indebtedness outstanding

Indebtedness outstanding was as follows:

($ in thousands)	March 31, 2018		December 31, 2017
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 $532 thousand and $547 thousand (4.5% imputed rate) and unamortized debt issuance costs of $1,932 thousand and $1,984 thousand	247,536		247,469
Federal Home Loan Bank borrowing	50,000		50,000
Total	$	297,536	$	297,469