Restricted Cash (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of components of restricted cash

	December 31, 2012		March 31, 2013
Short-term restricted cash
Standby letters of credit	$	669	$	669
DCEMB bonds — current operating costs	7,776		8,838
Total short-term restricted cash	8,445		9,507
Chesapeake Notes	12,256		483
DCEMB bonds — long-term plant expansion	952		952
Total restricted cash	$	21,653	$	10,942

- Definition

Tabular disclosure of the cash and cash items which are restricted as to withdrawal or usage. The provisions of any restrictions are described in a note to the financial statements. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits.

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