Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018
OPERATING ACTIVITIES
Net income		$ 12,340	$ 12,928
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of buildings and tenant improvements		16,875	13,540
Amortization of leasing costs and in-place lease intangibles		6,507	4,917
Accrued straight-line rental revenue		(2,208)	(1,029)
Amortization of leasing incentives and above or below-market rents		(97)	(141)
Accrued straight-line ground rent expense		56	136
Adjustment for uncollectable accounts		9	112
Noncash stock compensation		1,017	820
Impairment charges		0	98
Noncash interest expense		701	557
Adjustment for Annapolis Junction loan discount amortization	[1]	(2,356)	0
Change in fair value of interest rate derivatives		3,396	(958)
Equity in income of unconsolidated real estate entities		(273)	0
Changes in operating assets and liabilities:
Property assets		2,387	(2,505)
Property liabilities		(2,841)	(1,973)
Construction assets		4,142	4,443
Construction liabilities		(4,004)	(15,081)
Interest receivable		(7,539)	(4,604)
Net cash provided by operating activities		28,112	11,260
INVESTING ACTIVITIES
Development of real estate investments		(75,679)	(57,741)
Tenant and building improvements		(12,519)	(5,599)
Acquisitions of real estate investments, net of cash received		(133,345)	(32,967)
Dispositions of real estate investments, net of selling costs		1,014	4,271
Notes receivable issuances		(25,355)	(5,816)
Notes receivable paydowns		1,692	0
Leasing costs		(1,883)	(2,060)
Leasing incentives		0	(79)
Contributions to equity method investments		(535)	(3,127)
Net cash used for investing activities		(246,610)	(103,118)
FINANCING ACTIVITIES
Proceeds from issuance of cumulative redeemable perpetual preferred stock, net		61,001	0
Proceeds from issuance of common stock, net		37,704	48,981
Common shares tendered for tax withholding		(344)	(343)
Debt issuances, credit facility and construction loan borrowings		291,392	147,248
Debt and credit facility repayments, including principal amortization		(138,175)	(84,277)
Debt issuance costs		(3,167)	(381)
Redemption of operating partnership units		0	(2,531)
Dividends on common stock and distributions on Operating Partnership units		(28,003)	(24,337)
Net cash provided by financing activities		220,408	84,360
Net increase (decrease) in cash, cash equivalents, and restricted cash		1,910	(7,498)
Cash, cash equivalents, and restricted cash, beginning of period		24,051	22,916
Cash, cash equivalents, and restricted cash, end of period	[2]	25,961	15,418
Supplemental Disclosures (noncash transactions):
Increase in dividends and distributions payable		2,128	1,450
(Decrease) increase in accrued capital improvements and development costs		(9,861)	6,692
Issuance of operating partnership units for acquisitions		69,061	1,702
Operating Partnership units redeemed for common shares		1,260	1,804
Debt assumed at fair value in conjunction with real estate purchases		101,390	0
Note receivable extinguished in conjunction with real estate purchase		31,252	0
Equity method investment redeemed for real estate acquisition		23,011	$ 0
Noncontrolling interest in acquired real estate entity		4,870
Recognition of operating lease ROU assets	[3]	33,525
Recognition of operating lease liabilities	[3]	41,191
Recognition of finance lease ROU assets		24,500
Recognition of finance lease liabilities		$ 17,871

[1] Borrower paid $5.0 million in exchange for the Company's purchase option. This is being accounted for as a loan modification fee; interest income is being recognized as additional interest income on the note receivable over the one-year remaining term. See Note 7 for additional discussion.

[2] The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the Condensed Consolidated Statements of Cash Flows (in thousands):     June 30, 2019   June 30, 2018 Cash and cash equivalents   $ 23,109
  $ 12,279
Restricted cash _(a)   2,852
  3,139
Cash, cash equivalents, and restricted cash   $ 25,961
  $ 15,418

(a) Restricted cash represents amounts held by lenders for real estate taxes, insurance, and reserves for capital improvements.

[3] Net of $0.4 million disposal related to the Company's preexisting lease at the Thames Street Wharf property acquired on June 26, 2019.