Borrowings (Credit facility) (Details) (USD $)		12 Months Ended	3 Months Ended	13 Months Ended		3 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 Revolving Credit Facility [Member]	Dec. 31, 2013 Revolving Credit Facility [Member] LIBOR [Member]	Apr. 30, 2012 Secured Debt [Member] Equipment Term Loan [Member]	Dec. 31, 2013 Secured Debt [Member] Equipment Term Loan [Member]	Dec. 31, 2013 Secured Debt [Member] Equipment Term Loan [Member] LIBOR [Member]
Line of Credit Facility [Line Items]
Revolving line of credit, maximum		$ 15,000,000
Required pledge of equity interests in subsidiary, percent	65.00%
Debt instrument, variable rate			2.25%			2.25%
Debt instrument, interest rate at period end						2.50%
Unused commitment fee, percentage		0.25%
Eligible equipment purchase, percentage				80.00%
Debt instrument, amount borrowed				5,000,000
Long-term borrowings					$ 2,200,000