Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2015

Equity [Abstract]

Summary of Changes in Shareholders' Equity

A summary of the changes in shareholders’ equity for the years ended December 31, 2015, 2014 and 2013 is as follows (in thousands, except per share amounts):

	COMMON STOCK				PAID-IN		DIVIDENDS PAID IN EXCESS
	SHARES		AMOUNT		CAPITAL		OF EARNINGS			TOTAL
BALANCE, DECEMBER 31, 2012		33,397	$	334	$	461,426	$	(89,011	)	$	372,749
Net earnings								70,011			70,011
Dividends declared — $0.850 per share								(28,640	)		(28,640	)
Stock-based compensation		—		—		971		—			971
BALANCE, DECEMBER 31, 2013		33,397	$	334	$	462,397	$	(47,640	)	$	415,091
Net earnings								23,418			23,418
Dividends declared — $0.960 per share								(32,402	)		(32,402	)
Stock-based compensation		20		—		917		—			917
BALANCE, DECEMBER 31, 2014		33,417	$	334	$	463,314	$	(56,624	)	$	407,024
Net earnings								37,410			37,410
Dividends declared — $1.15 per share								(38,897	)		(38,897	)
Stock-based compensation		5		—		1,024		—			1,024
BALANCE, DECEMBER 31, 2015		33,422	$	334	$	464,338	$	(58,111	)	$	406,561