v2.4.0.6

Stock Options (Tables)

12 Months Ended

Dec. 31, 2012

Stock Options [Abstract]

Summary of stock option activity

		Number of Shares				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term				Aggregate Intrinsic Value (In Thousands)
Outstanding at January 1, 2012			216,500			$	22.22
Granted			142,500				28.74
Exercised			(11,050	)			17.93
Forfeited/Cancelled			(2,800	)			25.41
Outstanding at December 31, 2012			345,150			$	25.03				6.67			$	1,824
Vested and exercisable at December 31, 2012			161,420			$	23.69				4.79			$	1,069

Stock options valuation assumptions

		Year Ended December 31,
		2012				2011				2010
Risk-free interest rate			0.78	%			n/a				1.76	%
Expected dividend yield			0.28	%			n/a				0.42	%
Expected volatility			44.9	%			n/a				48.3	%
Expected lives			5.0 years				n/a				5.0 years

X

- Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration