Stockholders' Equity - Common and Preferred Stock (Details)											12 Months Ended
	Jan. 03, 2017 USD ($)	Oct. 03, 2016 USD ($)	Jul. 01, 2016 USD ($)	Apr. 01, 2016 USD ($)	Mar. 02, 2016 USD ($)	Feb. 17, 2016 USD ($) director shares	Jan. 04, 2016 USD ($) shares	Feb. 06, 2015 USD ($)	Jan. 05, 2015 USD ($)	Apr. 02, 2014 USD ($) shares	Dec. 31, 2016 USD ($) vote_per_stock $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) shares	Nov. 01, 2016 shares	Feb. 06, 2016 USD ($) shares	Feb. 09, 2015 USD ($) shares	Feb. 19, 2014 USD ($) shares	Dec. 31, 2013 USD ($)
Class of Stock [Line Items]
Capital stock, shares authorized (in shares)														155,000,000
Common Stock, Shares Authorized											150,000,000	150,000,000		150,000,000
Preferred Stock, Shares Authorized														5,000,000
Proceeds from rights offering, net of expenses | $						$ 286,000,000.0					$ 286,003,000	$ 49,528,000	$ 13,180,000
Related Party Transaction, Closing Period, Number of Years After Closing Date						3 years
Related Party Transaction, Closing Period, Number of Years After Opening of Project						1 year
Common stock dividends (in shares)																5,102	6,167
Related Party Transaction, Minimum Number of Independent Directors | director						3
Series B
Class of Stock [Line Items]
Preferred Stock, Shares Authorized											5,000,000	5,000,000
Voting rights per stock (vote per stock) | vote_per_stock											0.054
Shares convertible for each stock (in shares)											0.054
Preferred stock, per share liquidation value (usd per share) | $ / shares											$ 29	$ 29
Dividends declared per share (usd per share) | $ / shares											$ 2.90
Preferred stock, shares outstanding (in shares)											44,258	44,258
Dividends, Preferred Stock, Cash | $		$ 32,087	$ 32,087	$ 32,087	$ 167,000							$ 167,000
Dividends, Preferred Stock, Multiplier											1.3
Common stock dividends, declared and undeclared | $																$ 159,000	$ 218,000
Common stock dividends, undeclared | $													$ 159,000					$ 218,000
Common Stock
Class of Stock [Line Items]
Price per share on issuable shares (usd per share) | $ / shares											$ 3.77
Number of trading dates used to calculated price per share											20 days
Series E
Class of Stock [Line Items]
Voting rights per stock (vote per stock) | vote_per_stock											0.25
Preferred stock, per share redemption value (usd per share) | $ / shares											$ 10
Preferred stock, dividend rate											8.00%
Subsequent Event | Series B
Class of Stock [Line Items]
Dividends, Preferred Stock, Cash | $	$ 32,087
Transferable Subscription Rights [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized							20,138,888
Proceeds from Issuance of Private Placement | $						$ 290,000,000		$ 49,500,000
Value of subscription rights to be exercised within 10 days of commencement | $							$ 30,000,000
Value of subscription rights to be exercised, maximum | $							290,000,000		$ 50,000,000
Sale of stock, commitment fee | $							$ 1,450,000		250,000
Sale of stock, commitment fee, percent							0.50%
Sale of stock, expenses reimbursed (not exceeding) | $									$ 40,000
Basic Subscription Rights [Member]
Class of Stock [Line Items]
Stock issuance, shares										90,633
Over Subscription Rights [Member]
Class of Stock [Line Items]
Stock issuance, shares										34,617
Warrant or Right [Member]
Class of Stock [Line Items]
Stock issuance, shares										427,776
Proceeds from Issuance of Stock, Rights Issue, Net | $										$ 13,400,000
Common Stock
Class of Stock [Line Items]
Stock issuance, shares												123,000	27,000
Common Stock | Transferable Subscription Rights [Member]
Class of Stock [Line Items]
Shares, Issued						20,138,888
Common Stock | Non-Transferable Subscription Rights [Member]
Class of Stock [Line Items]
Shares, Issued															1,408,451
Agreement To Exercise Additional Rights, Aggregate Amount Threshold | $															$ 50,000,000
Basic Subscription Rights, Exercise Period After Grant									10 days
Common Stock | Basic Subscription Rights [Member] | Transferable Subscription Rights [Member]
Class of Stock [Line Items]
Shares, Issued						176,086
Common Stock | Basic Subscription Rights [Member] | Non-Transferable Subscription Rights [Member]
Class of Stock [Line Items]
Shares, Issued															10,658
Common Stock | Over Subscription Rights [Member] | Transferable Subscription Rights [Member]
Class of Stock [Line Items]
Shares, Issued						13,136,817
Kien Huat Realty Limited [Member] | Basic Subscription Rights [Member]
Class of Stock [Line Items]
Stock issuance, shares										302,526
Kien Huat Realty Limited [Member] | Common Stock | Non-Transferable Subscription Rights [Member]
Class of Stock [Line Items]
Shares, Issued															864,360
Kien Huat Realty Limited [Member] | Common Stock | Standby Purchase Agreement [Member]
Class of Stock [Line Items]
Shares, Issued						6,825,985									533,433
Kien Huat Realty Limited [Member] | Expense Reimbursement [Member]
Class of Stock [Line Items]
Related Party Transaction, Amounts of Transaction | $						$ 50,000