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Detail of Selected Balance Sheet Accounts | 12 Months Ended
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Sep. 30, 2016
Disclosure Text Block Supplement [Abstract] |
Detail of Selected Balance Sheet Accounts | D. Detail of Selected Balance Sheet Accounts Allowance for Doubtful Accounts Activity in our allowance for doubtful accounts consisted of the following (in thousands):
| September 30, |
| 2016 |  |  | 2015 |
Balance at beginning of period | $ | 746 |  |  | $ | 1,577 |
Bad debt expense (recovery) |  | 187 |  |  |  | (29 | )
Uncollectible accounts written off, net of recoveries |  | (120 | ) |  |  | (749 | )
Change due to foreign currency translation |  | (2 | ) |  |  | (53 | )
Balance at end of period | $ | 811 |  |  | $ | 746 |
Inventories The components of inventories are summarized below (in thousands):
| September 30, |
| 2016 |  |  | 2015 |
Raw materials, parts and subassemblies | $ | 29,639 |  |  | $ | 36,575 |
Work-in-progress |  | 996 |  |  |  | 1,084 |
Provision for excess and obsolete inventory |  | (4,114 | ) |  |  | (4,768 | )
Total inventories | $ | 26,521 |  |  | $ | 32,891 |
Cost and Estimated Earnings on Uncompleted Contracts The components of costs and estimated earnings and related amounts billed on uncompleted contracts are summarized below (in thousands):
| September 30, |
| 2016 |  |  | 2015 |
Costs incurred on uncompleted contracts | $ | 1,088,921 |  |  | $ | 912,237 |
Estimated earnings |  | 350,125 |  |  |  | 271,640 |
|  | 1,439,046 |  |  |  | 1,183,877 |
Less: Billings to date |  | (1,416,914 | ) |  |  | (1,121,141 | )
Net underbilled position | $ | 22,132 |  |  | $ | 62,736 |
Included in the accompanying balance sheets under the following captions: |  |  |  |  |  |  |
Costs and estimated earnings in excess of billings on uncompleted contracts – underbilled | $ | 66,106 |  |  | $ | 104,793 |
Billings in excess of costs and estimated earnings on uncompleted contracts – overbilled |  | (43,974 | ) |  |  | (42,057 | )
Net underbilled position | $ | 22,132 |  |  | $ | 62,736 |
Property, Plant and Equipment Property, plant and equipment are summarized below (in thousands):
| September 30, |  |  | Range of
| 2016 |  |  | 2015 |  |  | Asset Lives
Land | $ | 22,107 |  |  | $ | 22,380 |  |  | —
Buildings and improvements |  | 119,512 |  |  |  | 120,983 |  |  | 3 - 39 Years
Machinery and equipment |  | 103,268 |  |  |  | 100,306 |  |  | 3 - 15 Years
Furniture and fixtures |  | 3,806 |  |  |  | 3,564 |  |  | 3 - 10 Years
Construction in process |  | 1,009 |  |  |  | 1,013 |  |  | —
| $ | 249,702 |  |  | $ | 248,246 |  |  |
Less: Accumulated depreciation |  | (104,725 | ) |  |  | (93,652 | ) |  |
Total property, plant and equipment, net | $ | 144,977 |  |  | $ | 154,594 |  |  |
There were no assets under capital lease as of September 30, 2016 or September 30, 2015. Depreciation expense from continuing operations, including the depreciation of capital leases when applicable, was $13.0 million, $13.1 million and $11.4 million for fiscal years 2016, 2015, and 2014, respectively. Warranty Accrual Activity in our warranty accrual consisted of the following (in thousands):
| September 30, |
| 2016 |  |  | 2015 |
Balance at beginning of period | $ | 4,930 |  |  | $ | 4,557 |
Increase to warranty expense |  | 4,249 |  |  |  | 3,364 |
Deduction for warranty charges |  | (4,464 | ) |  |  | (2,738 | )
Change due to foreign currency translation |  | (76 | ) |  |  | (253 | )
Balance at end of period | $ | 4,639 |  |  | $ | 4,930 |

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