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Balance Sheet Components | 12 Months Ended
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Sep. 30, 2018
Balance Sheet Related Disclosures [Abstract] |
Balance Sheet Components | Balance Sheet Components Property and equipment Property and equipment, at cost, consists of the following (in thousands):
| As of September 30,
| 2018 |  | 2017
Land | $ | 1,738 |  |  | $ | 1,738 |
Building and improvements | 12,044 |  |  | 11,799 |
Office furniture and equipment | 203,512 |  |  | 207,140 |
Leasehold improvements | 55,918 |  |  | 53,531 |
| 273,212 |  |  | 274,208 |
Less: Accumulated depreciation and amortization | (195,668 | ) |  | (172,557 | )
Total property and equipment, net | $ | 77,544 |  |  | $ | 101,651 |
Depreciation expense for the years ended September 30, 2018, 2017 and 2016 was $40.7 million, $45.2 million and $49.2 million, respectively. Capitalized software Capitalized software consists of the following (in thousands):
| As of September 30,
| 2018 |  | 2017
Capitalized software | $ | 94,803 |  |  | $ | 88,627 |
Less: Accumulated amortization | (72,374 | ) |  | (61,879 | )
Total Capitalized software, net | $ | 22,429 |  |  | $ | 26,748 |
Amortization expense for the years ended September 30, 2018, 2017 and 2016 was $11.2 million, $10.6 million and $9.2 million, respectively. Deferred contract costs Deferred contract costs consist of the following (in thousands):
| As of September 30,
| 2018 |  | 2017
Deferred contract costs | $ | 29,941 |  |  | $ | 30,776 |
Less: Accumulated amortization | (15,561 | ) |  | (14,478 | )
Total Deferred contract costs, net | $ | 14,380 |  |  | $ | 16,298 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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