Income Tax	3 Months Ended
Jun. 30, 2012
Income Tax Disclosure [Abstract]
Income Tax	Income Tax The provision for income taxes for the three months ended June 30, 2012 and 2011 was approximately $7.8 million and $9.9 million, respectively. The effective tax rates were 33.6% and 34.2% for the three months ended June 30, 2012 and 2011, respectively. The effective tax rate decreased as compared to the same prior year period due to a net benefit from the reduced state effective tax rate, benefit of current period discrete items, and the decrease benefit due to the federal research and development tax credit statute which expired on December 31, 2011. Uncertain tax positions As of June 30, 2012, the Company has provided a liability of $413 for unrecognized tax benefits related to various federal and state income tax matters. If recognized, $413 would impact the Company’s effective tax rate. The liability for the three months ended June 30, 2012 decreased from the same prior year period by $71 due to the expiration of the statute of limitations of prior year tax positions of acquired companies. The Company's income tax returns filed for tax years 2009 through 2011 and 2008 through 2011 are subject to examination by the federal and state taxing authorities, respectively. The Company is currently under examination by the IRS and by three state income tax authorities. The Company does not anticipate that total unrecognized tax benefits will significantly change due to the settlement of audits or the expiration of statute of limitations within the next twelve months.

Income Tax

3 Months Ended

Jun. 30, 2012

The provision for income taxes for the three months ended June 30, 2012 and 2011 was approximately $7.8 million and $9.9 million, respectively. The effective tax rates were 33.6% and 34.2% for the three months ended June 30, 2012 and 2011, respectively. The effective tax rate decreased as compared to the same prior year period due to a net benefit from the reduced state effective tax rate, benefit of current period discrete items, and the decrease benefit due to the federal research and development tax credit statute which expired on December 31, 2011.

Uncertain tax positions

As of June 30, 2012, the Company has provided a liability of $413 for unrecognized tax benefits related to various federal and state income tax matters. If recognized, $413 would impact the Company’s effective tax rate. The liability for the three months ended June 30, 2012 decreased from the same prior year period by $71 due to the expiration of the statute of limitations of prior year tax positions of acquired companies.

The Company's income tax returns filed for tax years 2009 through 2011 and 2008 through 2011 are subject to examination by the federal and state taxing authorities, respectively. The Company is currently under examination by the IRS and by three state income tax authorities. The Company does not anticipate that total unrecognized tax benefits will significantly change due to the settlement of audits or the expiration of statute of limitations within the next twelve months.