Credit Facility - Summary of activity on the Bank of America, N.A. line of credit (Details) (USD $)	6 Months Ended
Sep. 30, 2013
Notes to Financial Statements
Balance at March 31, 2013:	$ 2,950,000
Borrowings
Repayments	(725,000)
Balance at June 30, 2013:	$ 2,225,000

Amount borrowed under the credit facility as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

Name:	us-gaap_LineOfCreditFacilityAmountOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant