Equity Incentive Plan (Tables)

12 Months Ended

Dec. 31, 2012

Equity Incentive Plan

Schedule of stock option activity

	Number of		Weighted		Weighted Average
	Shares Subject		Average		Remaining	Aggregate Intrinsic
	to Option		Exercise Price		Contractual Term	Value
Options outstanding, December 31, 2009	—		$	—
Granted	587,555		16.00
Forfeited	—		—
Expired	—		—
Exercised	—		—
Options outstanding, December 31, 2010	587,555		16.00		9.7 years	$	—
Granted	543,380		15.27
Forfeited	(122,848	)	15.80
Expired	(8,074	)	16.00
Exercised	(1,962	)	16.00			Less than $0.1 million
Options outstanding, December 31, 2011	998,051			15.63	8.9 years	$	2.2 million
Granted	236,893		23.87
Forfeited	(119,723	)	16.62
Expired	(156	)	16.00
Exercised	(97,870	)	16.04			$	0.8 million
Options outstanding, December 31, 2012	1,017,195		$	17.25	8.2 years	$	10.6 million
Exercisable at December 31,
2010	—		N/A		N/A	N/A
2011	130,942		$	16.00	8.7 years	$	0.2 million
2012	287,036		$	15.74	7.9 years	$	3.4 million

Schedule of unvested shares subject to option

	Number of Shares Subject to Option		Weighted Average Fair Value at Grant
Unvested balance, December 31, 2009	—		$	—
Granted	587,555		4.95
Forfeited	—		—
Vested	—		—
Unvested balance, December 31, 2010	587,555		$		4.95
Granted	543,380		4.89
Forfeited	(122,848	)	4.93
Vested	(140,978	)	4.92
Unvested balance, December 31, 2011	867,109		$	4.92
Granted	236,893		7.76
Forfeited	(119,723	)	5.24
Vested	(254,120	)	4.96
Unvested balance, December 31, 2012	730,159		$	5.70

Summary of assumptions used to value the stock options granted

	2012		2011		2010
Expected term (in years)	6.25		6.25		6.25
Expected volatility	44.08	%	43.07	%	43.59	%
Expected annual dividend	3.00	%	3.41	%	3.25	%
Risk-free rate	1.56	%	2.76	%	1.33	%

Schedule of restricted awards

	Restricted Awards		Weighted Average Fair Value at Grant
Unvested balance, December 31, 2009	—		$	—
Granted	195,437		15.98
Forfeited	—		—
Vested	—		—
Unvested balance, December 31, 2010	195,437		15.98
Granted	273,473		15.19
Forfeited	(51,213	)	15.81
Vested	(74,466	)	16.10
Unvested balance, December 31, 2011	343,231		15.35
Granted	412,780		24.59
Forfeited	(48,599	)	18.26
Vested	(108,717	)	15.46
Unvested balance, December 31, 2012	598,695		$	21.37