Summary of Business Organization, Operations and Significant Accounting Policies (Lease Revenue) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Future minimum rentals on lease
2015	$ 5,030,000
2016	5,054,000
2017	5,206,000
2018	351,000
Total	15,641,000
Number of owned facilities leased to an unrelated party	2
Rental income received on lease		4,500,000	4,500,000
Leased Facility 1
Future minimum rentals on lease
Number of years lease term	10 years
Period of lease extension option	up to three additional five-year terms
Carrying value of leased facility	32,500,000	33,400,000
Accumulated depreciation of leased facility	6,700,000	5,800,000
Rental income received on lease	4,600,000	4,500,000	4,500,000
Lease expiration date	Jan. 01, 2018
Leased Facility 2
Future minimum rentals on lease
Number of years lease term	1 year
Period of lease extension option	up to three additional one-year terms
Carrying value of leased facility	1,100,000	1,200,000
Accumulated depreciation of leased facility	$ 400,000	$ 200,000
Lease expiration date	Dec. 31, 2014