Non-controlling Interests (Details) (USD $)	1 Months Ended		3 Months Ended
	Apr. 19, 2007	Apr. 30, 2007	Mar. 31, 2014 Subclasses Director	Mar. 31, 2013	Apr. 20, 2007	Apr. 11, 2007
Noncontrolling Interest [Line Items]
Net book value of assets contributed						$ 17,000
Percentage of membership interest owned before (in hundredths)	99.999%
Owned membership interest from private equity investors (in hundredths)	0.001%
Percentage of membership interest sold to investor (in hundredths)					39.999%
Cash consideration received on sale of membership interest		6,000,000
Recognized gain on sale of membership interests to the Investors		5,800,000
Number of members in board of director			5
Number of subclasses of membership units			2
Net loss			(5,301,000)	(656,000)
Changes in non-controlling interest [Abstract]
Non-controlling interest, beginning of period			454,000	468,000
Net income			258,000	344,000
Distributions			(447,000)	(461,000)
Non-controlling interest, end of period			265,000	351,000
Class A Membership Unit [Member]
Noncontrolling Interest [Line Items]
Percentage of ownership interest owned after transaction (in hundredths)		60.00%
Percentage of profit and loss allocated (in hundredths)			60.00%
Net loss			386,000	517,000
Class B Membership Unit [Member]
Noncontrolling Interest [Line Items]
Percentage of ownership interest owned after transaction (in hundredths)		40.00%
Percentage of profit and loss allocated (in hundredths)			40.00%
Net loss			258,000	344,000
Changes in non-controlling interest [Abstract]
Distributions			$ 447,000	$ 461,000