Condensed Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues
Rental revenues	$ 24,251	$ 19,908	$ 47,534	$ 38,098
General contracting and real estate services revenues	33,200	47,066	70,003	76,137
Total revenues	57,451	66,974	117,537	114,235
Expenses
Rental expenses	5,071	4,631	10,400	9,391
Real estate taxes	2,382	1,959	4,731	3,616
General contracting and real estate services expenses	32,025	45,283	67,062	73,425
Depreciation and amortization	8,602	5,766	16,751	10,674
General and administrative expenses	2,224	2,096	4,708	4,424
Acquisition, development and other pursuit costs	437	591	1,141	762
Impairment charges	0	23	35	23
Total expenses	50,741	60,349	104,828	102,315
Operating income	6,710	6,625	12,709	11,920
Interest income	722	0	904	0
Interest expense	(3,978)	(3,358)	(7,769)	(6,404)
Loss on extinguishment of debt	0	(180)	0	(407)
Gain on real estate dispositions	13	7,210	26,687	13,407
Change in fair value of interest rate derivatives	(373)	(40)	(2,762)	(187)
Other income	43	24	119	39
Income before taxes	3,137	10,281	29,888	18,368
Income tax (provision) benefit	(6)	4	(224)	35
Net income	3,131	10,285	29,664	18,403
Net income attributable to noncontrolling interests	(1,097)	(3,764)	(10,260)	(6,777)
Net income attributable to stockholders	$ 2,034	$ 6,521	$ 19,404	$ 11,626
Net income per share and unit:
Basic and diluted (in dollars per share)	$ 0.06	$ 0.25	$ 0.62	$ 0.46
Weighted-average outstanding:
Common shares (in shares)	31,736	25,587	30,964	25,316
Common units (in shares)	17,113	14,769	16,570	14,772
Basic and diluted (in shares)	48,849	40,356	47,534	40,088
Dividends and distributions declared per common share and unit (in dollars per share)	$ 0.18	$ 0.17	$ 0.18	$ 0.17
Comprehensive income:
Net income	$ 3,131	$ 10,285	$ 29,664	$ 18,403
Unrealized cash flow hedge losses	0	238	0	(548)
Comprehensive income	3,131	10,523	29,664	17,855
Comprehensive income attributable to noncontrolling interests	(1,097)	(3,851)	(10,260)	(6,573)
Comprehensive income attributable to stockholders	$ 2,034	$ 6,672	$ 19,404	$ 11,282