2014

2013

Transportation equipment

$

56,130

$

56,334

Furniture and office equipment

54,816

49,677

Production equipment, buildings and improvements

399,370

400,817

Subtotal

510,316

506,828

Less: impairment provision

(50,475

)

(50,658

)

accumulated depreciation

(298,377

)

(276,496

)

161,464

179,674

Construction in progress

197,067

197,781

358,531

377,455