Credit Facility (Details) (USD $)	6 Months Ended
	Jun. 30, 2013
Credit Facility (Textual) [Abstract]
Unsecured line of credit facility	$ 20,000,000
Line of credit facility expiry date	Aug. 20, 2013
Credit facility interest rate description	Libor plus 200 basis points with a 3% floor
Basis points added to base rate	2.00%
Credit facility provided for interest LIBOR floor	3.00%
Unused facility fee payable monthly (basis points)	0.15%
Outstanding borrowings	$ 0