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Subsequent Event	12 Months Ended
	Dec. 31, 2011
Subsequent Event [Abstract]
Subsequent Event	15. Subsequent Event Effective March 9, 2012, the Company entered into definitive agreements to repurchase 2,485,929 shares of the Company's common stock held by the Estate of William W. Sherertz and 500,000 common shares held by Nancy Sherertz. Mr. Sherertz, a founder and former president and CEO of the Company, died January 20, 2011. Nancy Sherertz is also a founder of the Company. The common shares will be repurchased at a price of $20 per share, representing total consideration of $59.7 million. In the closing of the transactions, the Company will pay $24.9 million in cash and issue 34,800 shares of Series A Nonconvertible, Non-Voting Redeemable Preferred Stock with a liquidation preference of $1,000 per share. The preferred stock will be entitled to receive cumulative preferential dividends at the rate of 5% per annum based upon the $1,000 liquidation preference with such rate increasing by 2% on each April 1 beginning April 1, 2013, until all of the outstanding preferred stock has been redeemed. The Company may pay the dividends in cash or in additional shares of preferred stock at its option. The Company may redeem all or a portion of the preferred stock at its option at any time at a price of $1,000 per share. The preferred stock is subject to mandatory redemption five years from the original issue date. Due to the mandatory redemption provision the preferred stock will be classified as a liability on the Company's Consolidated Balance Sheet.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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