Notes Payable (Trust Preferred Securities) (Narrative) (Details)	0 Months Ended	12 Months Ended					0 Months Ended				1 Months Ended	12 Months Ended			0 Months Ended
	Feb. 05, 2007 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Apr. 30, 2009 USD ($)	Mar. 31, 2009 USD ($)	May 01, 2012 Trust Preferred Securities [Member]	Apr. 30, 2009 Trust Preferred Securities [Member] USD ($)	Dec. 31, 2008 Trust Preferred Securities [Member] USD ($)	Feb. 05, 2007 Trust Preferred Securities [Member]	Dec. 31, 2011 Trust Preferred Securities [Member] USD ($)	Dec. 31, 2012 Trust Preferred Securities [Member] USD ($)	Dec. 31, 2009 Trust Preferred Securities [Member] USD ($)	Mar. 31, 2009 Trust Preferred Securities [Member] USD ($)	Feb. 05, 2007 New Zealand [Member] USD ($)	Feb. 05, 2007 New Zealand [Member] NZD	Feb. 05, 2007 Australia [Member] USD ($)	Feb. 05, 2007 Australia [Member] AUD
Debt Instrument [Line Items]
Trust preferred securities												$ 51,500,000		$ 22,900,000
Debt instrument term										20 years
Trust preferred securities issued	51,500,000
Trust preferred securities issued to third party	50,000,000
Trust preferred securities issued to parent	1,500,000
Initial interest rate												9.22%
Period of initial interest rate							5 years
LIBOR period												3 months
Spread over LIBOR												4.00%
Initial period of payoff restriction												5 years
Percentage of principal that may be paid without penalty after initial restriction period												100.00%
Period of waiver on all financial covenants												9 years
Financial covenant waiver payment due									1,600,000			270,000
Financial covenant waiver payment									1,100,000		270,000
Net proceeds from private placement	49,900,000
Investment in common trust securities	1,500,000	838,000	838,000		838,000
Debt retired															34,400,000	50,000,000	5,800,000	7,400,000
Trust preferred dividends paid		1,900,000	2,500,000	2,500,000
Preferred stock dividends payable		198,000	416,000
Frequency of interest payment												3 months
Extinguishment of debt								22,900,000
Marketable securities						11,500,000
Amortization of debt discount													106,000
Gain on retirement of subordinated debt								10,700,000
Write-off of deferred loan costs								$ 749,000