Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2017

A summary of the changes in shareholders’ equity for the years ended December 31, 2017, 2016 and 2015, is as follows (in thousands):

	Common Stock				Additional Paid-in		Dividends Paid in Excess
	Shares		Amount		Capital		of Earnings			Total
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 and settlements		5		—		1,024		—			1,024
BALANCE, DECEMBER 31, 2015		33,422	$	334	$	464,338	$	(58,111	)	$	406,561
Net earnings								38,411			38,411
Dividends declared — $1.03 per share								(35,385	)		(35,385	)
Shares issued pursuant to ATM Program, net	653		7			14,879		—			14,886
Shares issued pursuant to stock dividends	256		3			4,409		—			4,412
Shares issued pursuant to dividend reinvestment	43			—		897		—			897
Stock-based compensation and settlements		19		—		1,136		—			1,136
BALANCE, DECEMBER 31, 2016		34,393	$	344	$	485,659	$	(55,085	)	$	430,918
Net earnings								47,186			47,186
Dividends declared — $1.16 per share								(43,675	)		(43,675	)
Shares issued pursuant to Equity Offering, net		4,715	47			104,265		—			104,312
Shares issued pursuant to ATM Program, net		513		5		13,523		—			13,528
Shares issued pursuant to dividend reinvestment		48		1		1,270		—			1,271
Stock-based compensation and settlements		27		—		155		—			155
BALANCE, DECEMBER 31, 2017		39,696	$	397	$	604,872	$	(51,574	)	$	553,695