Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2015

Equity [Abstract]

Schedule of Stock by Class

Common share offerings of the Company consisted of the following from inception through December 31, 2015:

Type of Offering (1)	Date	Shares Issued	Price per Share		Gross Proceeds (in thousands)		Net Proceeds (in thousands)
Initial public offering	4/21/2010	8,625,000	$	20.00	$	172,500	$	158,700
Private placement offering (2)	4/21/2010	500,000	20.00		10,000		10,000
Follow-on common share offering	2/8/2011	4,000,000	16.00		64,000		60,300
Over-allotment option	2/8/2011	600,000	16.00		9,600		9,100
Follow-on common share offering	1/14/2013	3,500,000	14.70		51,400		48,400
Over-allotment option	1/31/2013	92,677	14.70		1,400		1,300
Follow-on common share offering	6/18/2013	4,500,000	16.35		73,600		70,000
Over-allotment option	6/28/2013	475,823	16.35		7,800		7,400
Follow-on common share offering	9/30/2013	3,250,000	18.35		59,600		56,700
Over-allotment option	10/11/2013	487,500	18.35		8,900		8,500
Follow-on common share offering	9/24/2014	6,000,000	21.85		131,100		125,600
Over-allotment option	9/24/2014	900,000	21.85		19,700		18,900
Follow-on common share offering	1/27/2015	3,500,000	30.00		105,000		103,300
Over-allotment option	1/27/2015	525,000	30.00		15,750		15,500
		36,956,000			$	730,350	$	693,700

(1) Excludes any shares issued pursuant to the Company's ATM Plan or DRSPP (each as defined below).

(2) The Company sold 500,000 common shares to Jeffrey H. Fisher, the Company’s Chairman, President and Chief Executive Officer (“Mr. Fisher”) in a private placement concurrent with its IPO.