Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows From Operating Activities
Net income	$ 36,512	$ 5,001
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	58,752
Amortization of deferred finance costs and debt premiums	1,171
Amortization of acquired above- and below-market leases, net	(3,912)
Amortization of acquired below-market ground lease	852
Straight-lining of rental revenue	(23,559)
Equity based compensation	1,969
Equity in net income of non-controlled entities	0	(7,898)
Distributions of cumulative earnings of non-controlled entities	0	2,262
Increase (decrease) in cash flows due to changes in operating assets and liabilities:
Restricted cash	(2,195)
Tenant and other receivables	(1,067)
Deferred leasing costs	(4,221)
Prepaid expenses and other assets	(4,251)
Accounts payable and accrued expenses	(11,073)
Deferred revenue and other liabilities	(2,846)
Net cash provided by operating activities	46,132
Cash Flows From Investing Activities
Decrease in restricted cash for investing activities	5,098
Development costs	0
Additions to building and improvements	(50,405)
Net cash used in investing activities	(45,307)
Cash Flows From Financing Activities
Proceeds from mortgage notes payable	0
Repayment of mortgage notes payable	(7,954)
Proceeds from credit facility	40,000
Repayments of credit facility	(10,000)
Proceeds from Unsecured Notes Payable	0
Deferred financing costs	0
Deferred offering costs	0
Contributions from owners	0
Distributions to Predecessor owners	0
Dividends paid to common stockholders	(16,251)
Distributions paid to non-controlling interests in the operating partnership	(25,572)
Net cash provided by (used in) financing activities	(19,777)
Net increase (decrease) in cash and cash equivalents	(18,952)
Cash and cash equivalents—beginning of period	60,743
Cash and cash equivalents—end of period	41,791
Supplemental disclosures of cash flow information:
Cash paid for interest	27,758
Cash paid for income taxes	1,594
Non-cash investing and financing activities -
Commercial real estate properties included in accounts payable and accrued expenses	20,156
Predecessor [Member]
Cash Flows From Operating Activities
Net income		5,001
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		24,616
Amortization of deferred finance costs and debt premiums		4,183
Amortization of acquired above- and below-market leases, net		0
Amortization of acquired below-market ground lease		0
Straight-lining of rental revenue		(1,907)
Equity based compensation		0
Equity in net income of non-controlled entities		(7,898)
Distributions of cumulative earnings of non-controlled entities		2,262
Increase (decrease) in cash flows due to changes in operating assets and liabilities:
Restricted cash		1,469
Tenant and other receivables		848
Deferred leasing costs		(7,432)
Prepaid expenses and other assets		(509)
Accounts payable and accrued expenses		27,082
Deferred revenue and other liabilities		(3,318)
Net cash provided by operating activities		44,397
Cash Flows From Investing Activities
Decrease in restricted cash for investing activities		(501)
Development costs		92
Additions to building and improvements		(33,011)
Net cash used in investing activities		(33,420)
Cash Flows From Financing Activities
Proceeds from mortgage notes payable		63,882
Repayment of mortgage notes payable		(16,377)
Proceeds from credit facility		0
Repayments of credit facility		0
Proceeds from Unsecured Notes Payable		1,500
Deferred financing costs		(2,325)
Deferred offering costs		(5,125)
Contributions from owners		3,912
Distributions to Predecessor owners		(27,427)
Dividends paid to common stockholders		0
Distributions paid to non-controlling interests in the operating partnership		0
Net cash provided by (used in) financing activities		18,040
Net increase (decrease) in cash and cash equivalents		29,017
Cash and cash equivalents—beginning of period		51,499
Cash and cash equivalents—end of period		80,516
Supplemental disclosures of cash flow information:
Cash paid for interest		25,451
Cash paid for income taxes		0
Non-cash investing and financing activities -
Commercial real estate properties included in accounts payable and accrued expenses		$ 428