Condensed Combined Statements of Cash Flows (Predecessor, USD $) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
OPERATING ACTIVITIES
Net income	$ 11,587	$ 5,748
Loss from discontinued operations		10
Income from continuing operations	11,587	5,758
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of buildings and tenant improvements	9,482	8,397
Amortization of deferred leasing costs and in-place lease intangibles	1,630	900
Accrued straight-line rental revenue	(763)	(1,340)
Amortization of lease incentives and above or below market rents	537	549
Accrued straight-line ground rent expense	273	248
Bad debt expense	155	78
Non-cash stock compensation	1,012
Impairment charges	533
Non-cash interest expense	482	437
Non-cash loss on extinguishment of debt	542
Gain on acquisitions	(9,460)
Change in the fair value of derivatives	(41)	(338)
Income from real estate joint ventures	(210)	(139)
Changes in operating assets and liabilities:
Property assets	6,438	(1,944)
Property liabilities	(563)	1,769
Construction assets	(2,375)	4,325
Construction liabilities	(1,071)	(10,207)
Net cash provided by continuing operations	18,188	8,493
Net cash used for discontinued operations		(34)
Net cash provided by operating activities	18,188	8,459
INVESTING ACTIVITIES
Development of real estate investments	(24,928)	(776)
Tenant and building improvements	(2,452)	(2,041)
Acquisitions of real estate investments, net of cash acquired	(2,106)
Government development grants	300	400
Decrease in restricted cash	455	170
Contributions to real estate joint ventures	(81)
Return of capital from real estate joint ventures	511	280
Deferred leasing costs	(671)	(453)
Leasing incentives	(243)
Net cash used for continuing operations	(29,215)	(2,420)
Net cash provided by discontinued operations		497
Net cash used for investing activities	(29,215)	(1,923)
FINANCING ACTIVITIES
Proceeds from sale of common stock	203,245
Offering costs	(7,604)
Formation Transactions	(47,221)
Debt issuances and credit facility borrowings	62,700	18,752
Debt and credit facility payments, including principal amortization	(184,606)	(22,467)
Debt issuance costs	(1,825)	(350)
Predecessor distributions, net	(10,709)	(7,500)
Dividends	(2,578)
Net cash provided by (used for) continuing operations	11,402	(11,565)
Net cash provided by discontinued operations
Net cash provided by (used for) financing activities	11,402	(11,565)
Net increase (decrease) in cash and cash equivalents	375	(5,029)
Cash and cash equivalents, beginning of period	9,400	13,449
Cash and cash equivalents, end of period	9,775	8,420
Supplemental cash flow information:
Cash paid for interest	10,170	12,184
Decrease in distributions payable	$ (528)	$ (825)