Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues
Rental revenues	$ 99,355	$ 81,172	$ 64,746
General contracting and real estate services revenues	159,030	171,268	103,321
Total revenues	258,385	252,440	168,067
Expenses
Rental expenses	21,904	19,204	16,667
Real estate taxes	9,629	7,782	5,743
General contracting and real estate services expenses	153,375	165,344	98,754
Depreciation and amortization	35,328	23,153	17,569
General and administrative expenses	9,552	8,397	7,711
Acquisition, development and other pursuit costs	1,563	1,935	229
Impairment charges	355	41	15
Total expenses	231,706	225,856	146,688
Operating income	26,679	26,584	21,379
Interest income	3,228	126	0
Interest expense	(16,466)	(13,333)	(10,648)
Loss on extinguishment of debt	(82)	(512)	0
Gain on real estate dispositions	30,533	18,394	2,211
Change in fair value of interest rate derivatives	(941)	(229)	(233)
Other income	147	119	120
Income before taxes	43,098	31,149	12,829
Income tax benefit (provision)	(343)	34	(70)
Net income	42,755	31,183	12,759
Net income attributable to noncontrolling interests	(14,681)	(11,541)	(5,068)
Net income attributable to stockholders	$ 28,074	$ 19,642	$ 7,691
Net income per share and unit:
Basic and diluted (in dollars per share)	$ 0.85	$ 0.75	$ 0.36
Weighted-average outstanding:
Common shares (in shares)	33,057	26,006	20,946
Common units (in shares)	17,167	15,377	14,125
Basic and diluted (in shares)	50,224	41,383	35,071
Comprehensive income:
Net income	$ 42,755	$ 31,183	$ 12,759
Unrealized cash flow hedge losses	0	(1,075)	0
Realized cash flow hedge losses reclassified to net income	0	27	0
Comprehensive income	42,755	30,135	12,759
Comprehensive income attributable to noncontrolling interests	(14,681)	(11,141)	(5,068)
Comprehensive income attributable to stockholders	$ 28,074	$ 18,994	$ 7,691