Equity Compensation, Employment Agreements and Other Benefit Plans (Details) - USD ($)		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Share based compensation
Maximum shares authorized for grant (in shares)		12,000,000
Shares available for grant		9,400,000
Accrued Dividends Payable		$ 74,575,000		$ 74,529,000		$ 73,643,000
Expense related to equity-based compensation instruments		7,832,000		8,585,000		4,158,000
DER
Share based compensation
Payments attributable to DERs		$ 16,000		69,000		$ 412,000
Special cash dividends paid (in dollars per share)						$ 0.78
Special cash dividends paid, amount						$ 194,000
Average forfeiture rate assumed on DERs outstanding		0.00%
Weighted average period over which DERs are scheduled to elapse		6 months
Unrecognized compensation cost		$ 44,000
Expense related to equity-based compensation instruments		$ 82,000		$ 146,000		$ 195,000
Activity and related information
Outstanding at beginning of year (in shares)		24,402		218,225		266,075
Granted (in shares)		0		0		0
Cancelled, forfeited or expired (in shares)		(16,187)		(193,823)		(47,850)
Outstanding at end of year (in shares)		8,215		24,402		218,225
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	[1]	$ 2.77
Fair value assumptions
Weighted average volatility estimated (as a percent)		31.00%
Expected term		6 years
Weighted average risk-free rate (as a percent)		2.23%
Estimated annual dividend yield (as a percent)		13.00%
Stock options
Share based compensation
Period to determine market value of the common stock to qualify as an incentive stock option for tax purposes		1 year
Maximum grant date market value of the common stock to be received upon exercise of options in one calendar year		$ 100,000
Exercise price of an ISO relative to fair market value on the grant date, minimum (as a percent)		100.00%
Exercise price of an ISO granted to a 10% stockholder relative to fair market value on the grant date, minimum (as a percent)		110.00%
Percentage of stockholders to whom 110% of ISO is granted		10.00%
Maximum period for exercise of stock options		10 years
Aggregate intrinsic value of total stock options Outstanding		$ 0
Intrinsic value of options exercised						$ 19,000
Stock options activity
Outstanding at beginning of year (in shares)		0		5,000		427,000
Granted (in shares)				0		0
Cancelled, forfeited or expired (in shares)				(5,000)		(402,000)
Exercised (in shares)	[2]			0		(20,000)
Outstanding at end of year (in shares)				0		5,000
Options exercisable at end of year (in shares)				0		5,000
Weighted Average Exercise Price
Outstanding at beginning of year (in dollars per share)		$ 0.00		$ 8.40		$ 10.14
Granted (in dollars per share)				0.00		0.00
Cancelled, forfeited or expired (in dollars per share)				8.40		10.25
Exercised (in dollars per share)	[2]			0.00		8.40
Outstanding at end of year (in dollars per share)				0.00		8.40
Options exercisable at end of year (in dollars per share)				$ 0.00		$ 8.40
Restricted Stock
Share based compensation
Unrecognized compensation cost		$ 800,000		$ 1,800,000
Accrued Dividends Payable		193,000		312,000
Total fair value of stock vested		$ 4,300,000		5,700,000		$ 2,100,000
Period for recognizing unrecognized compensation cost		1 year 6 months
Expense related to equity-based compensation instruments		$ 4,373,000		$ 5,553,000		$ 2,150,000
Activity and related information
Outstanding at beginning of year (in shares)		243,948		443,967		483,442
Granted (in shares)		497,007		491,797		231,531
Vested (in shares)	[3]	(629,212)		(690,397)		(270,456)
Cancelled, forfeited or expired (in shares)		(823)		(1,419)		(550)
Outstanding at end of year (in shares)		110,920		243,948		443,967
Weighted Average Grant Date Fair Value
Outstanding at beginning of year (in dollars per share)	[4]	$ 7.48		$ 7.50		$ 7.74
Granted (in dollars per share)	[4]	6.83		8.29		7.33
Vested (in dollars per share)	[3],[4]	6.98		8.07		7.77
Cancelled/forfeited (in dollars per share)	[4]	7.74		7.58		7.72
Outstanding at end of year (in dollars per share)	[4]	$ 7.41		$ 7.48		$ 7.50
Restricted Stock Units
Share based compensation
Unrecognized compensation cost		$ 4,000,000		$ 2,700,000
Period for recognizing unrecognized compensation cost		1 year 8 months 5 days
Weighted average forfeiture rate of unvested RSUs (as a percent)		0.00%
Expense related to equity-based compensation instruments	[5]	$ 3,377,000		$ 2,886,000		$ 1,813,000
Activity and related information
Outstanding at beginning of year (in shares)		1,218,474		777,818		727,648
Granted (in shares)		682,054	[1]	630,815	[6]	112,824	[7]
Settled (in shares)		(17,298)		(87,338)		(53,091)
Cancelled, forfeited or expired (in shares)		(7,500)		(102,821)		(9,563)
Outstanding at end of year (in shares)		1,875,730		1,218,474		777,818
Vested but not settled at end of year		729,523		643,138		98,824
Unvested at end of period (in shares)		1,146,207		575,336		678,994
Weighted Average Grant Date Fair Value
Outstanding at beginning of year (in dollars per share)		$ 6.84		$ 6.48		$ 6.43
Granted (in dollars per share)		7.01	[1]	6.64	[6]	5.82	[7]
Settled (in dollars per share)		6.60		6.86		4.15
Cancelled/forfeited (in dollars per share)		6.85		2.90		7.88
Outstanding at end of year (in dollars per share)		6.90		6.84		6.48
Vested but not settled at end of year (in dollars per share)		7.20		7.10		7.93
Unvested at end of year (in dollars per share)		$ 6.71		$ 6.54		$ 6.27
Restricted Stock Units | Chief Executive Officer
Share based compensation
Expense related to equity-based compensation instruments				$ 500,000
RSUs with Service Condition
Activity and related information
Outstanding at beginning of year (in shares)		769,174		490,099		448,141
Granted (in shares)		390,804	[1]	357,015	[6]	64,483	[7]
Settled (in shares)		(17,298)		(72,873)		(21,025)
Cancelled, forfeited or expired (in shares)		(3,750)		(5,067)		(1,500)
Outstanding at end of year (in shares)		1,138,930		769,174		490,099
Vested but not settled at end of year		554,023		467,638		84,199
Unvested at end of period (in shares)		584,907		301,536		405,900
Weighted Average Grant Date Fair Value
Outstanding at beginning of year (in dollars per share)		$ 7.55		$ 7.75		$ 7.61
Granted (in dollars per share)		7.96	[1]	7.22	[6]	8.23	[7]
Settled (in dollars per share)		6.60		7.28		6.20
Cancelled/forfeited (in dollars per share)		7.97		7.36		7.77
Outstanding at end of year (in dollars per share)		7.71		7.55		7.75
Vested but not settled at end of year (in dollars per share)		7.83		7.81		8.50
Unvested at end of year (in dollars per share)		$ 7.59		$ 7.15		$ 7.60
RSUs with Market and Service Conditions
Activity and related information
Outstanding at beginning of year (in shares)		449,300		287,719		279,507
Granted (in shares)		291,250	[1]	273,800	[6]	48,341	[7]
Settled (in shares)		0		(14,465)		(32,066)
Cancelled, forfeited or expired (in shares)		(3,750)		(97,754)		(8,063)
Outstanding at end of year (in shares)		736,800		449,300		287,719
Vested but not settled at end of year		175,500		175,500		14,625
Unvested at end of period (in shares)		561,300		273,800		273,094
Weighted Average Grant Date Fair Value
Outstanding at beginning of year (in dollars per share)		$ 5.61		$ 4.32		$ 4.55
Granted (in dollars per share)		5.73	[1]	5.87	[6]	2.59	[7]
Settled (in dollars per share)		0.00		4.71		2.80
Cancelled/forfeited (in dollars per share)		5.73		2.67		7.89
Outstanding at end of year (in dollars per share)		5.66		5.61		4.32
Vested but not settled at end of year (in dollars per share)		5.21		5.21		4.69
Unvested at end of year (in dollars per share)		$ 5.80		$ 5.87		$ 4.30
RSUs with Service Condition and both Service and Market Conditions
Activity and related information
Granted (in shares)		582,500		547,600
Fair value assumptions
Weighted average volatility estimated (as a percent)		18.00%		22.00%		23.00%
Expected term		3 years		3 years		3 years
Weighted average risk-free rate (as a percent)		0.90%		0.73%		0.65%
Estimated annual dividend yield (as a percent)		9.00%		8.00%		13.00%
RSUs with Service Condition, weighted average grant date fair value based on share closing price
Activity and related information
Granted (in shares)		99,554		83,215
RSUs with Service Condition, weighted average grant date fair value based on share closing price | Minimum
Fair value assumptions
Common stock, closing price (in dollars per share)		$ 7.93		$ 7.19
RSUs with Service Condition, weighted average grant date fair value based on share closing price | Maximum
Fair value assumptions
Common stock, closing price (in dollars per share)		$ 7.97		$ 8.16
Equity Compensation Plan
Share based compensation
Maximum number of common shares that can be granted to participant in any one year (in shares)		1,500,000
Period during which a participant can be awarded the maximum number of shares allowable under the Plan		1 year
Maximum percentage of common shares that can be owned or deemed to be owned by a participant (more than)		9.80%

[1] The weighted average grant date fair value of these awards require the Company to estimate certain valuation inputs. In determining the fair value for 582,500 of these awards granted in 2015, the Company applied: (i) a weighted average volatility estimate of approximately 18%, which was determined considering historic volatility in the price of Company’s common stock over the three-year period prior to the grant date and the implied volatility of certain exchange-traded options on the Company’s common stock at the grant date; (ii) a weighted average risk-free rate of 0.90% based on the continuously compounded constant maturity treasury rate corresponding to a maturity commensurate with the expected vesting term of the awards; and (iii) an estimated annual dividend yield of 9%. The weighted average grant date fair value for the remaining 99,554 awards with a service condition only was estimated based on the closing price of the Company’s common stock at the grant date ranging from $7.93 to $7.97. There are no post vesting conditions on these awards.

[2] For the year ended December 31, 2013, the intrinsic value of Options exercised was approximately $19,000.

[3] All restrictions associated with restricted stock are removed on vesting.

[4] The grant date fair value of restricted stock awards is based on the closing market price of the Company’s common stock at the grant date.

[5] RSU expense for the year ended December 31, 2014 includes approximately $500,000 for a one-time grant to the Company’s chief executive officer.

[6] The weighted average grant date fair value of these awards require the Company to estimate certain valuation inputs. In determining the fair value for 547,600 of these awards granted in 2014, the Company applied: (i) a weighted average volatility estimate of approximately 22%, which was determined considering historic volatility in the price of Company’s common stock over the three-year period prior to the grant date and the implied volatility of certain exchange-traded options on the Company’s common stock at the grant date; (ii) a weighted average risk-free rate of 0.73% based on the continuously compounded constant maturity treasury rate corresponding to a maturity commensurate with the expected vesting term of the awards; and (iii) an estimated annual dividend yield of 8%. The weighted average grant date fair value for the remaining 83,215 awards with a service condition only was estimated based on the closing price of the Company’s common stock at the grant date ranging from $7.19 to $8.16. There are no post vesting conditions on these awards.

[7] The determination of the weighted average grant date fair value of these awards require the Company to estimate certain valuation inputs. In determining the fair value for awards granted in 2013, the Company applied: (i) a weighted average volatility estimate of approximately 23%, which was determined considering historic volatility in the price of Company’s common stock over the three-year period prior to the grant date and the implied volatility of certain exchange-traded options on the Company’s common stock at the grant date; (ii) a weighted average risk-free rate of 0.65% based on the continuously compounded constant maturity treasury rate corresponding to a maturity commensurate with the expected vesting term of the awards; and (iii) an estimated annual dividend yield of 13%. There are no post vesting conditions on these awards.