Balance at

Charged to

Charged to

Write-offs

Balance at

Beginning of

Costs and

Other

Net of

End of

Year

Expenses

Accounts

Recoveries

Year

(in thousands)

Allowance for Doubtful Accounts

2013

$

429

$

619

$

—

$

(383

)

$

665

2012

$

524

$

528

$

—

$

(623

)

$

429

2011

$

700

$

190

$

—

$

(366

)

$

524

Valuation Allowance for Deferred Tax Assets

2013

$

312,127

$

(11,367

)

$

(6,659

)

$

—

$

294,101

2012

$

322,395

$

(10,282

)

$

14

$

—

$

312,127

2011

$

320,498

$

1,851

$

46

$

—

$

322,395