Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net loss	$ (418)	$ (1,361)
Adjustment to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	15,610	8,860
Non-cash portion of interest expense	248	236
Intangible amortization in rental income, net	1,369	1,168
Straight-line rent adjustments, net	(772)	(690)
Gain on interest rate swaps		(215)
Non-cash compensation expense	745	492
Change in assets and liabilities:
Tenant accounts receivable, net	(243)	572
Leasing commissions, net	(722)	(148)
Restricted cash	(103)	(313)
Prepaid expenses and other assets	(1,438)	60
Accounts payable, accrued expenses and other liabilities	(3,325)	(1,685)
Tenant prepaid rent and security deposits	1,122	820
Due from related parties	506	91
Total adjustments	12,997	9,248
Net cash provided by operating activities	12,579	7,887
Cash flows from investing activities:
Additions of land and building improvements	(47,801)	(30,181)
Restricted cash	(387)	258
Cash paid for deal deposits, net	(670)	(200)
Additions to lease intangibles	(13,477)	(8,492)
Net cash used in investing activities	(62,335)	(38,615)
Cash flows from financing activities:
Proceeds from credit facility		40,000
Proceeds from unsecured credit facility	20,000
Repayment of unsecured credit facility	(99,300)
Proceeds from unsecured term loan	25,000
Proceeds from mortgage notes payable		2,500
Repayment of mortgage notes payable	(1,045)	(1,971)
Payment of loan fees and costs	(1,473)	(124)
Dividends and distributions	(11,289)	(6,160)
Proceeds from sales of common stock	117,539
Offering costs	(5,149)
Restricted cash - escrow for dividends	(1,553)	(1,553)
Net cash provided by financing activities	42,730	32,692
Increase (decrease) in cash and cash equivalents	(7,026)	1,964
Cash and cash equivalents-beginning of period	19,006	16,498
Cash and cash equivalents-end of period	$ 11,980	$ 18,462