Stockholder's Equity - Additional Information (Detail) $ / shares in Units, $ in Thousands							12 Months Ended
	Aug. 16, 2016 USD ($) $ / shares shares	Apr. 15, 2016 USD ($) $ / shares shares	Dec. 15, 2015	Apr. 17, 2015 USD ($)	Feb. 03, 2015 USD ($) $ / shares shares	Aug. 19, 2014 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) shares	Dec. 31, 2013 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecaptured Section 1250 gain, percent of capital gain							100.00%	0.00%	19.00%
Shares outstanding							3,600,000	0
Issuance of common stock, shares					11,500,000	17,250,000
Common stock share price (in dollars per share) | $ / shares					$ 16	$ 13.50	$ 23.1258756888	$ 16.07
Issuance of common stock, net | $					$ 176,200	$ 221,800	$ 183,386	$ 175,833	$ 221,773
Underwriting discount and offering costs | $					$ 7,800	$ 11,100	$ 12,011	8,174	11,158
Net proceeds from public offering used in exchange for common units of partnership interests in OP Units						17,250,000
Non-vested shares							287,827
Repurchase of operating partnership units | $							$ 0	$ (136)	0
Conversion of common units to common stock, shares							59,646	288,234
Conversion of common units to common stock | $							$ 0	$ 0	$ 0
Preferred stock, interest							5.875%	5.875%
Liquidation preference (per share) | $ / shares							$ 25	$ 25
Restricted stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested shares							287,827	333,441	320,017	140,468
OP Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Units redeemed							0	8,468	0
LTIP Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested shares							41,688
Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, shares								11,500,500
Conversion of common units to common stock, shares									685,915
Conversion of common units to common stock | $							$ 0	$ 3	$ 7
Noncontrolling Interests
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Conversion of common units to common stock | $							(630)	(3,162)	(7,779)
Parent
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Underwriting discount and offering costs | $							12,011	8,174	11,158
Conversion of common units to common stock | $							$ 630	3,162	$ 7,779
Operating Partnership | Noncontrolling Interests | Equity
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of operating partnership units							1,966,996
Noncontrolling interest percentage ownership in Operating Partnership							2.90%
Follow On Public Offer (Equity Offering)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, shares		10,350,000
Issuance of common stock, net | $		$ 174,400
Underwriting Discount And Offering Costs | $		$ 8,300
Follow On Public Offer (Equity Offering) | OP Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Net proceeds from public offering used in exchange for common units of partnership interests in OP Units		10,350,000
IPO
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, net | $								$ 100
ATM Program
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum aggregate offering amount | $				$ 125,000
At The Market Equity Offering Program
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock share price (in dollars per share) | $ / shares								$ 14.3
Issuance of common stock, net | $							$ 9,300	$ 0
Proceeds from issuance of common stock, net | $							$ 9,200
Common Stock, Shares Available under ATM							115,700,000
Common Stock, Shares, Issued							402,683	500
Series A Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares outstanding	3,600,000
Preferred stock, interest	5.875%
Liquidation preference (per share) | $ / shares	$ 25
Preferred Stock, Liquidation Preference Per Share, Limit On Share Conversion							2.2738
Preferred Stock, Dividend Rate, Per-Dollar-Amount | $ / shares	$ 1.46875
Proceeds from Issuance of Preferred Stock and Preference Stock, Net Of Offering Costs | $	$ 86,700
Payments of Stock Issuance Costs | $	$ 3,300
Common Stock | Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, shares							10,752,683		17,250,000
Underwriters | Follow On Public Offer (Equity Offering)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock share price (in dollars per share) | $ / shares		$ 17.65
Underwriters | Over-Allotment Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, shares		1,350,000
REIT Portfolio Acquisition [Member] | Follow On Public Offer (Equity Offering)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, shares		10,350,000
REIT Portfolio Acquisition [Member] | 12.5% Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares outstanding		575
Preferred stock, interest		12.50%
Preferred Stock, Shares Issued		700
Preferred Stock, Redemption Price Per Share | $ / shares		$ 1,000
Preferred Stock, Redemption Amount | $		$ 125
REIT Portfolio Acquisition [Member] | Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of voting interests acquired		100.00%
REIT Portfolio Acquisition [Member] | Unaffiliated Third Parties | 12.5% Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares outstanding		125
2013 Incentive Award Plan | Absolute TSR Vesting Percentage Range Two | Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Relative TSR Vesting Percentage			25.00%					20.00%
2013 Incentive Award Plan | Relative TSR Vesting Percentage Range Two | Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Absolute TSR Vesting Percentage			25.00%					20.00%
2013 Incentive Award Plan | Absolute TSR Vesting Percentage Range Three | Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Relative TSR Vesting Percentage			60.00%					60.00%
2013 Incentive Award Plan | Relative TSR Vesting Percentage Range Three | Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Absolute TSR Vesting Percentage			60.00%					60.00%
2013 Incentive Award Plan | Absolute TSR Vesting Percentage Range Four | Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Relative TSR Vesting Percentage			100.00%					100.00%
2013 Incentive Award Plan | Relative TSR Vesting Percentage Range Four | Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Absolute TSR Vesting Percentage			100.00%					100.00%
2013 Incentive Award Plan | Absolute TSR Vesting Percentage Range One | Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Relative TSR Vesting Percentage			0.00%					0.00%
2013 Incentive Award Plan | Relative TSR Vesting Percentage Range One | Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Absolute TSR Vesting Percentage			0.00%					0.00%