Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2011

Employee Benefit Plans

Components Of Net Periodic Benefit Cost

	Three months ended		Six months ended
	June 30,		June 30,
	2011	2010	2011	2010
Service cost	$     1,081	$        648	$     2,064	$        939
Interest cost	98	37	188	82
Expected return on plan assets	(105)	(60)	(199)	(106)
Amortization	62	4	118	12
Employee contribution	(268)	(170)	(507)	(263)
Total net periodic benefit cost	$        868	$        459	$     1,664	$        664