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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2015
Fair Value Measurements [Abstract]  
Balance of assets and liabilities measured at fair value on a recurring basis

(in thousands)

 

Level 1(1)

 

Level 2(2)

 

Level 3(3)

 

Total

December 31, 2015

 

 

 

 

 

 

 

 

 

 

 

 

Assets:

 

 

 

 

 

 

 

 

 

 

 

 

Derivative contracts

 

$

373

 

$

1,308

 

$

—

 

$

1,681

Liabilities:

 

 

 

 

 

 

 

 

 

 

 

 

Derivative contracts

 

$

609

 

$

1,583

 

$

—

 

$

2,192

December 31, 2014

 

 

 

 

 

 

 

 

 

 

 

 

Assets:

 

 

 

 

 

 

 

 

 

 

 

 

Derivative contracts

 

$

1,001

 

$

1,376

 

$

—

 

$

2,377

Liabilities:

 

 

 

 

 

 

 

 

 

 

 

 

Derivative contracts

 

$

440

 

$

3,563

 

$

—

 

$

4,003

____________

(1)      quoted prices in active markets for identical assets or liabilities

(2)      observable inputs other than quoted prices in active markets for identical assets and liabilities

(3)      no observable pricing inputs in the market
Summary of the change in the balance of the company's assets measured at fair value on a recurring basis using significant unobservable inputs

 

 

Year ended December 31,

(in thousands)

 

2015

 

2014

 

2013

Balance, beginning of period

 

$

—

 

$

62

 

 

$

—

 

Total gains (losses) (realized or unrealized) included in earnings in “Direct cost of revenues”

 

 

—

 

 

(62

)

 

 

(142

)

Purchases, sales, issuances and settlements:

 

 

 

 

 

 

 

 

 

 

 

Purchases

 

 

—

 

 

—

 

 

 

359

 

Settlement

 

 

—

 

 

—

 

 

 

(155

)

Balance, end of period

 

$

—

 

$

—

 

 

$

62

 

 

 

 

 

 

 

 

The amount of total gains for the period included in earnings in “Direct cost of revenues” attributable to the change in unrealized gains or losses relating to assets held at the end of the period

 

$

—

 

$

—

 

 

$

62