Debt - Additional Information (Detail)		12 Months Ended
	Dec. 15, 2016 shares	Dec. 31, 2016 USD ($) property extension $ / shares	Dec. 31, 2015 USD ($) $ / shares	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($) unit $ / shares $ / Unit	Dec. 30, 2016 USD ($)	Nov. 27, 2013	Feb. 26, 2013
Line of Credit Facility [Line Items]
Extinguishment of debt, amount		$ 315,229,000	$ 58,220,000	$ 225,481,000
Accrued interest		1,585,000	3,267,000
Loss on extinguishment of debt, net		$ 35,864,000	$ 0	0
Common stock, par value | $ / shares		$ 1.00	$ 1.00
Debt		$ 110,358,000	$ 381,515,000
Deferred finance costs, net		1,633,000	8,267,000
Amortization of deferred financing fees		3,598,000	4,002,000	$ 3,845,000
Debt maturities, 2017		0
Debt maturities, 2018		485,000
Debt maturities, 2019		0
Debt maturities, 2020		104,673,000
Debt maturities, 2021		0
Debt maturities, thereafter		5,200,000
6% Tangible Equity Units
Line of Credit Facility [Line Items]
Interest rate percentage					6.00%		6.00%
Principal amount of debt					$ 150,000,000
Units issued | unit					6,000,000
Exercise price of unit | $ / Unit					25.00
Common stock, par value | $ / shares					$ 1.00
Issuance of common stock (in shares) | shares	7,857,000
Debt		0	$ 8,666,000
Revolving Line of Credit | Sublimit For Letters Of Credit
Line of Credit Facility [Line Items]
Sublimit for letters of credit under line of credit facility		100,000,000
Letter of Credit
Line of Credit Facility [Line Items]
Sublimit for letters of credit outstanding		14,850,000
Senior Notes
Line of Credit Facility [Line Items]
Interest rate percentage				8.50%
Percentage of principal amount redeemed			97.00%
Principal amount of debt				$ 250,000,000
Loss on extinguishment of debt, net		35,681,000
Write off of deferred debt issuance cost		5,416,000	$ 506,000
Tender offer advisory services		1,301,000
Principal amount of notes			19,440,000
Gain on early extinguishment of debt			(589,000)
Debt		$ 5,200,000	224,647,000
Senior Notes | 6% Tangible Equity Units
Line of Credit Facility [Line Items]
Interest rate percentage					4.50%
Face amount per unit, debt | $ / Unit					4.2522
Convertible Debt
Line of Credit Facility [Line Items]
Interest rate percentage		3.75%			3.75%			3.75%
Extinguishment of debt, amount		$ 5,000,000
Extinguishment of debt, amount		$ 4,452,000
Percentage of principal amount redeemed		93.25%
Principal amount of debt					$ 125,000,000
Loss on extinguishment of debt, net		$ 183,000
Gain on early extinguishment of debt		110,000
Maturity date					Mar. 01, 2020
Initial conversion rate					40.8351
Principal amount of initial conversion rate					$ 1,000
Unamortized debt discount		13,809,000
Repayments of long-term debt, including payments for repurchase of equity		4,663,000
Carrying amount of equity component		211,000
Debt		104,673,000	104,719,000
Secured Promissory Notes
Line of Credit Facility [Line Items]
Debt		$ 0	15,400,000
Senior Secured Credit Facility
Line of Credit Facility [Line Items]
Expiration date		May 15, 2017
Number of extensions | extension		2
Length of extensions		1 year
Maximum borrowing capacity under term loan facility		$ 125,000,000				$ 300,000,000
Amount drawn on		0
Net unused borrowing capacity		$ 71,262,000
Percentage of spread on federal funds effective rate		0.50%
Minimum net worth required for compliance		$ 426,312,000
Minimum net worth required for compliance, computed as		$ 379,044,000
Positive net income requirement for net worth compliance (as a percent)		85.00%
Minimum net worth required for compliance (as a percentage)		75.00%
Minimum effective leverage ratio exceeded (less than)		40.00%
Stockholders distribution covenant, interest coverage ratio		3.0
Minimum liquidity required (less than)		$ 125,000,000
Payments of capital distribution		$ 50,000,000
Percentage from sales of properties and non-core assets (up to)		65.00%
Deferred finance costs, net		$ 314,000	$ 2,768,000
Over-Allotment Option | 6% Tangible Equity Units
Line of Credit Facility [Line Items]
Units issued | unit					600,000
London Interbank Offered Rate (LIBOR) | Senior Secured Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		4.00%
Base Rate | Senior Secured Credit Facility
Line of Credit Facility [Line Items]
Percentage of variable spread on base rate		3.00%
Thirty Day LIBOR Rate | Senior Secured Credit Facility
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate		1.00%
Radisson Hotel & Suites, Austin | Austin, Texas
Line of Credit Facility [Line Items]
Extinguishment of debt, amount		$ 15,400,000
Purchase price of properties sold		130,000,000
Radisson Hotel & Suites, Austin | Secured Promissory Notes | Austin, Texas
Line of Credit Facility [Line Items]
Debt		15,400,000
Eleven | Multi Family Property | Austin, Texas
Line of Credit Facility [Line Items]
Extinguishment of debt, amount		23,936,000
Purchase price of properties sold		$ 60,150,000
Number of units of multifamily project | property		257
Tender Offer | Senior Notes
Line of Credit Facility [Line Items]
Extinguishment of debt, amount		$ 215,495,000
Redemption price, (as a percent)		97.60%
Extinguishment of debt, amount		$ 245,604,000
Unamortized premium		$ 29,091,000
Percentage of principal amount redeemed		113.50%
Accrued interest		$ 1,018,000
Open Market Transaction | Senior Notes
Line of Credit Facility [Line Items]
Principal amount of debt		$ 9,750,000
Minimum | Open Market Transaction | Senior Notes
Line of Credit Facility [Line Items]
Percentage of principal amount redeemed		99.00%
Maximum | Open Market Transaction | Senior Notes
Line of Credit Facility [Line Items]
Percentage of principal amount redeemed		99.95%